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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Hacksaw Blade, 12" Length, 1/2" Width, 0.024" Thickness, 2-Pack | BiMetal Unique HSS SafeFlex Hand, Ideal for Contractors and Tradesmen, 32 TPI, KBS12322

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 teeth for precision cutting

🛡️Hardened cutting edge with flexible back

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Description

⚡ Cut Sharp, Cut Smart — The Blade That Means Business

DUAL PACK VALUE - Two premium blades in one pack keep you ready for any project without interruption.
PRECISION MEETS POWER - 32 teeth per inch deliver clean, accurate cuts on metals like mild steel, copper, and aluminum.
BUILT TO BEND NOT BREAK - Flexible back design resists twisting and bending in tight, awkward spaces—cut with confidence.
USER FRIENDLY VERSATILITY - Ideal for pros and DIYers alike, these blades make metal cutting effortless and efficient.
TRUSTED LEGACY OF EXCELLENCE - Starrett’s craftsmanship since 1880 ensures consistent, reliable performance every time.

The Starrett 12" Hacksaw Blade 2-pack features 32 TPI hardened cutting edges with a flexible back, engineered for precision and durability. Perfect for cutting mild steel, copper, brass, and aluminum, these blades excel in tight spaces and interrupted cuts. Trusted since 1880, Starrett delivers professional-grade performance in a versatile, user-friendly design.

Specifications

ASIN	B000FCINVQ
Best Sellers Rank	#39,865 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Hacksaw Blades
Brand Name	Starrett
Color	Yellow
Compatible Material	Metal
Customer Reviews	4.7 4.7 out of 5 stars (451)
Global Trade Identification Number	07891265403384
Item Dimensions L x W	11.81"L x 1.8"W
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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₩24242

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In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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