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 Bi-Metal Hacksaw Blades - KBS1232-2 Safe-Flex HSS Hand Saw 300mm 32 TPI Cutting Edge - For Non-ferrous Metals, Stainless Steel, Pipes, Plastics - 2 Pack

Product ID: 63951007

Details

Brand
Starrett
Colour
Yellow
Compatible devices
Hacksaws
Item weight
40 Grams
Material
Alloy Steel
Number of Packs
2

🔧Patented solid-state diffusion for durability

⚙️32 TPI ultra-fine teeth for precision cuts

🛡️Safe-Flex tech for unmatched blade flexibility

12672CFA

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Description

🛠️ Cut with Confidence, Flex with Freedom!

HEAVY DUTY RESILIENCE - Patented diffusion process creates a blade that withstands bending, twisting, and interrupted cuts in tight spaces.
PRECISION CUTTING POWER - 32 teeth per inch deliver razor-sharp, consistent cuts on metals and plastics alike.
UNBREAKABLE FLEXIBILITY - Safe-Flex technology lets you bend the blade without fear—tie it in a knot, it won’t shatter.
TRUSTED LEGACY QUALITY - From Starrett, a precision tool pioneer since 1880, ensuring professional-grade performance every time.
VERSATILE MATERIAL MASTERY - Cuts through stainless steel, pipes, plastics, rubber, bamboo, and more—your all-in-one cutting solution.

Starrett’s Bi-Metal Hacksaw Blades (KBS1232-2) combine 32 TPI hardened teeth with patented Safe-Flex high-speed steel technology, delivering unmatched durability and flexibility. Designed for heavy-duty cutting of non-ferrous metals, stainless steel, pipes, and plastics, these 300mm blades resist breakage and excel in tight, demanding environments. Backed by over a century of precision tool innovation, this 2-pack ensures long-lasting, professional-grade performance.

Specifications

ASIN	B000FCINVQ
Best Sellers Rank	23,796 in DIY & Tools ( See Top 100 in DIY & Tools ) 17 in Handsaw Blades
Brand	Starrett
Colour	Yellow
Compatible Devices	Hacksaws
Compatible Material	Metal
Customer Reviews	4.6 out of 5 stars 1,449 Reviews
Global Trade Identification Number	07891265403384
Included Components	Hacksaw Blades
Item Dimensions L x W	5L x 46W millimetres
Item Thickness	0.03 Inches
Item Type Name	Hacksaw Blades
Item Weight	40 Grams
Manufacturer	The L. S. Starrett Company Limited
Manufacturer Part Number	KBS1232-2
Material	Alloy Steel
Model Number	KBS1232-2
Number of Teeth	32
Number of teeth	32
Product dimensions	5L x 46W millimetres
Set Name	2 Pack
Style	2 Pack
Style Name	2 Pack
Unit Count	2.0 count

Reviews

J**.

Good saw blades

Good quality and value.

23.03.2026

L**G

Decent quality

Good quality and strong

13.03.2026

P**E

Good cutting performance, chokes on Alu. too easily.

Starrett vs Eclipse? I think Eclipse are better; just. Starrett cuts well but chokes easily. The opposite is true for Eclipse in my experience. But overall a great performance when cutting choke inducing thin gauge aluminium.

26.12.2025

H**Z

all ok

2.07.2026

A**J

Quality

Brilliant service & price

24.09.2025

S**T

Functional as ever.

It's Starrett. It's a hacksaw blade. It cuts metal. What else do you want.

4.07.2025

R**G

Good product

5.10.2025

T**T

Excellent quality

1.07.2025

J**R

Serra de primeira

Ótimo produto

2.04.2026

J**A

Muy buenas sierras

Cortan estupendamente y con poco esfuerzo

25.04.2026

F**E

Muy buenas

Cortan el metal con una facilidad que no había visto antes, y he usado de supuestas marcas buenas, totalmente recomendables, saludos.

3.02.2025

C**O

Better than the generic hacksaw blades

If you are going to cut Carbon Steerer's or seat posts, make sure to order extras. Carbon is very harsh on these blades and make sure to use fast light movements on the hacksaw handle or else the blade will dull very fast if you go to slow.

15.06.2021

A**O

Cumplidor

Cumple con lo prometido

17.07.2019

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12672CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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