---
product_id: 1211401
title: "2231 Fin Alignment Guide Model Kit , Color Varies"
brand: "estes"
price: "€ 63.77"
currency: EUR
in_stock: true
reviews_count: 9
category: "Estes"
url: https://www.desertcart.at/products/1211401-2231-fin-alignment-guide-model-kit-color-varies
store_origin: AT
region: Austria
---

# Supports 3/32" & 1/8" fin thickness Fits BT-20 to BT-80 tubes Holds 3 or 4 fins precisely 2231 Fin Alignment Guide Model Kit , Color Varies

**Brand:** estes
**Price:** € 63.77
**Availability:** ✅ In Stock

## Summary

> 🚀 Align your fins, launch your dreams!

## Quick Answers

- **What is this?** 2231 Fin Alignment Guide Model Kit , Color Varies by estes
- **How much does it cost?** € 63.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/1211401-2231-fin-alignment-guide-model-kit-color-varies)

## Best For

- estes enthusiasts

## Why This Product

- Trusted estes brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Fit:** Compatible with a wide range of rocket body tubes from BT-20 to BT-80.
- • **STEM-Ready Fun:** Backed by Estes’ legacy since 1958, inspiring future aerospace innovators.
- • **Build Like a Pro:** Ideal for beginners and master-level rocketeers aiming for flawless builds.
- • **Precision Perfected:** Eliminate guesswork with exact fin alignment every time.
- • **Versatile Fin Support:** Securely holds 3 or 4 fins made from balsa, basswood, or plywood.

## Overview

The Estes 2231 Fin Alignment Guide is a precision plastic tool designed to hold and align three or four fins on model rocket tubes ranging from BT-20 to BT-80. Compatible with 3/32" and 1/8" thick balsa, basswood, or plywood fins, it ensures fast, accurate fin placement for both novice and expert builders. Lightweight and durable, this essential accessory streamlines rocket assembly, reducing errors and enhancing flight performance, all while supporting STEM education and safe rocketry practices.

## Description

A precision molded accessory that makes it easy to glue three or four fins to various sized body tubes ranging from BT-20 to BT-80 diameters. Unique and adjustable vertical fin holders can accommodate either 3/32 in. or 1/8 in. balsa, bass or plywood fins. This is a must-have tool for any serious model rocket builder. Never attach your fins wrong again and remove that painful process of holding them in place while the adhesive dries.

Review: Great little tool that makes installing fins on rocket tube infinitely easier. - Cheap and effective. I wish I had this when I was a kid. 90% of the time when I had a problem with model rockets as a kid it was because of fin alignment, and this goes a long way towards eliminating that problem with model rocket kits that need balsa wood fins attached to a cardboard tube. I have built several kits with my son and have had no problem with fin alignment. You still have to be careful, but this eliminates the guessing and trying to line up measurements on a curved surface so everything is straight and spaced evenly.
Review: Works well - Great product.

## Features

- FIN GUIDE FOR MODEL ROCKET: The Fin Alignment Guide is the essential tool for model rocket builders who want speed and precision. It fits a wide range of body tubes from BT-20 to BT-80.
- EASIER ALIGNMENT: Our Fin Alignment Guide is capable of holding either three or four fins, the Fin Alignment Guide works with 3/32 in. or 1/8 in. balsa, basswood, or plywood fins
- CONVENIENT BUILDING ACCESSORY: Whether you’re building a beginner model rocket or a master-level replica, this fin-alignment tool has a place in your rocket-building kit. It’s the ideal tool to help serious rocket builders get their models crafted right the first time with as much precision as possible.
- SAFETY FIRST, FUN ALWAYS: Our rockets and rocket launch accessories are designed to be used with the NAR (National Association of Rocketry) model-rocket safety code. Always ensure you have an appropriate launch site, stand back at least 15 ft., insert the safety key, issue a countdown, and then you can let your rocket fly!
- WE IGNITE IMAGINATIONS: Since 1958, Estes has created educational rocket kits and displays designed for an unforgettable aerospace experience. As a family-owned company, we have grown to offer exciting STEM products that engage aspiring rocketeers and the future minds of aerospace.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004LGXCLI |
| Additional Features | Fast & accurate fin alignment, Suitable for three or four finned rockets |
| Age Range (Description) | Kid |
| Age Range Description | Kid |
| Art Craft Kit Type | Model Rocketry |
| Brand | Estes |
| Brand Name | Estes |
| Color | Assorted |
| Customer Reviews | 4.4 out of 5 stars 1,642 Reviews |
| Global Trade Identification Number | 00047776022317 |
| Included Components | SUPPLIES.SCIENCE EDUCATION.MODELS.ROCKETS/ACCESSORIES |
| Item Dimensions | 12 x 3 x 6 inches |
| Item Type Name | Model Rockets |
| Item Weight | 4 ounces |
| Item dimensions L x W x H | 12 x 3 x 6 inches |
| Manufacturer | Estes |
| Manufacturer Part Number | 2231 |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | Fin Alignment Guide |
| Model Number | 2231 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Seasons | All Seasons |
| Size | Medium |
| Subject Character | (-) |
| Theme | Model Rocket Kit |
| UPC | 047776022317 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Warranty Against Manufacturer Defects |

## Product Details

- **Age Range (Description):** Kid
- **Brand:** Estes
- **Color:** Assorted
- **Item dimensions L x W x H:** 12 x 3 x 6 inches
- **Theme:** Model Rocket Kit

## Images

![2231 Fin Alignment Guide Model Kit , Color Varies - Image 1](https://m.media-amazon.com/images/I/715k6GbV7NL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: The standard center post does not fit over the top of either of the mini posts. All other fits good. I have sanded both over 30 minutes. Replace?**
A: The standard center tube is the same size as A, B or C rocket engine. Sanding it for 30 minutes is much to long to make it fit.  Used a used engine after you clean it out

**Q: Is there any way to use this to set fins that are up higher on the body, and not at the very bottom?**
A: It depends on how high on the body they are. I've used this to set fins that are four inches or more above the base of the rocket, but those had a pretty big angle so I was able to clamp part of the fin very high on the plastic. 
I use a piece of wood from the sheet the fins are cut out of as a height guide so I get them all the same.

If it's really high, you might be able to turn the rocket body and find upside-down and attach them that way (too far from the bottom could be close enough to the top of the body).

**Q: Does Estes sell the fins separately? I can't seem to find just fins.**
A: Call Estes Customer Service 800 number and ask can they send it to you. Go to the website and find the contact us link

**Q: Can the fins be glued at an angle to induce spin?**
A: The Estes PN 2231 Fin Alignment Guide is designed to only align fins vertically on the body tube. No provision was ever make to alter fin alignment as this would require flight testing of all Estes rockets to support that angling fins was OK to do on all products as it could potentially decrease the altitude performance on all products. Additionally, we do not and would not support the idea of angling fins on any Estes rocket unless that product was specifically designed to spin during launch, like PN 7258 Space Twister.
The Estes Team

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great little tool that makes installing fins on rocket tube infinitely easier.
*by R***T on September 22, 2025*

Cheap and effective. I wish I had this when I was a kid. 90% of the time when I had a problem with model rockets as a kid it was because of fin alignment, and this goes a long way towards eliminating that problem with model rocket kits that need balsa wood fins attached to a cardboard tube. I have built several kits with my son and have had no problem with fin alignment. You still have to be careful, but this eliminates the guessing and trying to line up measurements on a curved surface so everything is straight and spaced evenly.

### ⭐⭐⭐⭐⭐ Works well
*by R***D on April 16, 2026*

Great product.

### ⭐⭐⭐⭐ Pretty good but you may need to do a little adjustment before use.
*by C***K on June 23, 2026*

Seems to work well after you correct any misalignment of the fin holders and get a comfortable procedure applying the fins. I have two of these and one came with one of the fin positions causing the holder to lean to the left enough to misalign. There are two little strips of plastic molding along each of the fin placement paths on the base upon which the fin holders rest when installed. I took my xacto knife and shaved away some of the strip on the right of one position so the holder would tilt more right and it straightened right up. It's a little pricey for something that needs adjustment but I've now built 11 rockets on them and and am comfortable with the procedure of using them. Wish I'd had them 6 decades ago when I started building rockets.

## Frequently Bought Together

- Estes 2231 Fin Alignment Guide Model Kit , Color Varies
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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-09-18*