will this fit my Dremel 3000 rotary drill?

YES, collet nuts are the same size for all Dremels and other brand rotary tools such as Milwaukee.

Can this be used on the Dmel 7300

I am not sure, but I think so. The product description states the ones it does not work with, and the 7300 is not on that list. It fits my Black and Decker, and the various colletts allow for me to use just about any accessory made for any rotary tool, and also twist drill bits. I hope this helps

Will these work in the 4200 with the "EZ Change" system?

I own a basic 2 speed dremel so I can't answer with 100% assurance but my guess is NO. At the very least, the collet "nut" that is supplied will not work on your unit (is in fact replaced by the EZ change system). Also, the dremel website says the EZ402 mandrel is for use with "...exclusive EZ lock accessories.".

regarding the nut's threads, do they begin at the edge, or 1/2" down inside (on the end you screw on with)??

They begin 1/2" down If you are talking about the nut with the female threads.

Dremel 4485 Quick Change Rotary Tool Collet Nut Set Medium

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 27.70

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡️ Upgrade your rotary game with precision and speed!

SWIFT ACCESSORY SWAPS - Quick-change collet nut lets you switch bits in seconds, minimizing downtime.
COLOR CODED CONVENIENCE - Brown-coded collets simplify accessory selection for your projects.
TRUSTED USA BASED SUPPORT - Reliable customer service ready to assist via chat, email, or phone.
PRECISION FIT FOR EVERY BIT - Includes four collets (0.8mm to 3.2mm) for versatile accessory compatibility.
UNIVERSAL DREMEL COMPATIBILITY - Works seamlessly with all corded and cordless Dremel rotary tools.

The Dremel 4485 Quick Change Rotary Tool Collet Nut Set is a 5-piece metal kit featuring four collets ranging from 0.8mm to 3.2mm and a quick-change collet nut. Designed for all Dremel rotary tools, it ensures secure, fast accessory swaps and enhanced versatility for carving, engraving, cutting, sanding, and grinding projects. Backed by USA-based customer support, this set is a must-have for professionals seeking precision and efficiency.

Reviews

User

good

Arrived on time. Very nice.

12.07.2023

User

Alternatieve spankop

Een dergelijk alternatief voor een dremelspankop.

12.05.2026

User

satisfied

So glad to not have to go to a hardware store

13.07.2026

User

とても精密

手に入らない物だと諦めて改良して使っていましたが､アマゾンさんで本品を手に入れる事が出来て大変助かりました。今までとは比べられないほど作業がはかどりとても嬉しいです。次回も宜しくお願いします。

30.01.2026

User

Good buy

Happy

18.01.2024

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€ 27.70

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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Asin	B0000302Z6
Best Sellers Rank	#11 in Router Collets
Date First Available	1 January 2024
Department	Unisex-Adult
Is Discontinued By Manufacturer	No
Item Model Number	4485
Manufacturer	Dremel
Product Dimensions	20.83 x 7.62 x 5.08 cm; 9.07 g

Dremel 4485 Quick Change Rotary Tool Collet Nut Set Medium

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Description

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Common Questions