How should i think about tpi? is 24 or 32 better for cutting stainless bolts?

This article is informative; http://diyhousehelp.com/tools/choosing-the-correct-hacksaw-blade-tooth-count

How long will one of these blades last on average if you use it an average of once or twice a week for small projects?

Depends on the material. Copper and aluminum are soft metals. The blade is going to last a long time. Stainless steel and harden metals not as long. I use mine on all sorts of different materials and I get at least a year out of each blade.

Starrett green stripe vs Starrett red stripe blades? What is the difference?

I had no clue, so I googled it & this is what I found. Greenstripe® These hardened-milled tooth blades are shatter resistant and are the best blade for interrupted cuts or when the blade is subject to excessive stresses. Redstripe® Constructed of uniformly hardened high speed steel, these blades maintain their cutting edge on the most difficult to cut materials, held securely. Bluestripe® These precision ground tooth blades have a patented solid-state diffusion process which produces the industry's most advanced bi-metal hand hacksaw.

How well would this cut an aluminum hand guard on a paintball marker?

I've cut through steel with these blades. As long as the metal on the hand guard is not thinner than 1/32", and the correct technique is used, there should be no problem.

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Starrett Hacksaw Blade, 12" Length, 1/2" Width, 0.024" Thickness, 2-Pack

Product ID: 764258

Details

Brand
Starrett
Color
Yellow
Item Highlight
BiMetal Unique
Item Thickness
0.03 inches
Item Weight
40 g
Material
Metal

📏12" length for versatile reach

⚙️32 TPI for precision cutting

🛡️Hardened cutting edge with flexible back

€ 21.04

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Cut with Confidence, Finish Like a Pro!

DUAL PACK ADVANTAGE - Two blades per pack ensure you’re always ready to tackle your next project without delay.
PRECISION MEETS POWER - 32 teeth per inch deliver clean, accurate cuts on metals like mild steel and aluminum.
BUILT TO BEND NOT BREAK - Safe-Flex® flexible back design resists twisting and bending in tight, awkward spaces.
TRUSTED LEGACY SINCE 1880 - Starrett’s century-plus commitment guarantees consistent, professional-grade performance.
USER FRIENDLY VERSATILITY - Ideal for contractors and DIY pros alike, these blades make metal cutting effortless and reliable.

The Starrett 12" Bi-Metal Safe-Flex Hand Hacksaw Blades (2-pack) combine a hardened cutting edge with a flexible back, delivering precision and durability for cutting mild steel, copper, brass, and aluminum. Featuring 32 teeth per inch, these blades excel in cramped or challenging conditions, making them a trusted choice for professionals and DIY enthusiasts alike.

Specifications

ASIN	B000FCINVQ
Best Sellers Rank	#43,668 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Hacksaw Blades
Brand Name	Starrett
Color	Yellow
Compatible Material	Metal
Customer Reviews	4.7 4.7 out of 5 stars (456)
Global Trade Identification Number	07891265403384
Item Dimensions L x W	11.81"L x 1.8"W
Item Highlight	BiMetal Unique HSS SafeFlex Hand, Ideal for Contractors and Tradesmen, 32 TPI, KBS12322
Item Thickness	0.03 inches
Item Weight	40 g
Manufacturer	Starrett
Material Type	Metal
Model	KBS1232-2
Number of Items	2
Number of Packs	2
Number of Teeth	32
Part Number	KBS1232-2
Set Name	Starrett Bi-Metal Unique HSS Safe-Flex Hand Hacksaw Blade 2-Pack
Style Name	2 Pack
Unit Count	2 Count

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