25 Pack 9 in 14/18TPI Metal Cutting Sawzall Blades - Durable M42 Set

In this review the 25 Pack 9 in 14/18TPI Metal Cutting Sawzall Blades is assessed for metalworkers and DIYers who need a reliable, bulk supply of blades for medium to thick metal cutting. The single biggest reason to buy is durability: the blades use M42 high-speed steel with 9% cobalt, which the reviewer found delivers better heat resistance and longer life than many standard bi-metal blades. The set also arrives in a handy plastic box and is sized to fit most reciprocating saws, making it a practical choice for job sites and garage projects.

Key Features

• High cobalt content: The 9% cobalt M42 teeth offer improved wear resistance and heat tolerance for longer cutting runs on metal.
• 14/18 TPI combination: The mixed tooth pitch balances cutting speed and finish, suitable for a range of medium and thick metals from 1/16 in to 5/16 in.
• Universal 1/2 in shank: The common shank fits most Sawzall-style reciprocating saws for quick blade changes on major brands.
• Boxed 25-pack: Twenty-five blades in a plastic storage box keep spares organized and accessible at the workbench or truck.
• Thicker blade body: At about 0.04 in thick the blade provides stability when cutting solid stock, pipes, and auto body panels.

Who It's For

The 25 Pack is best for tradespeople, metal fabricators, and serious DIYers who cut steel, pipes, rebar, auto bodies, and similar materials and want a larger supply of durable blades. It suits users who value longer blade life and heat resistance during repeated or extended cutting tasks.

Those who regularly cut very hard alloys or need extremely fine finish cuts should look elsewhere for specialty carbide or tooth geometries; likewise, casual users who seldom cut metal may prefer smaller packs or general-purpose blades to save cost.

Pros & Cons

Pros

• High 9% cobalt M42 construction increases wear and heat resistance for extended use.
• Combination 14/18 TPI works well across medium to thick metal thicknesses from 1/16 in to 5/16 in.
• Universal 1/2 in shank fits the majority of reciprocating saws for broad compatibility.
• Plastic box and 25-count supply are convenient for jobs and storage.

Cons

• Not ideal for very hard metal or precision finish work compared with carbide-tipped specialty blades.
• Some users report mixed cutting speed and durability depending on the specific metal and cutting conditions.

Specifications

Our Verdict

The 25 Pack 9 in 14/18TPI blades are a solid value for professionals and committed DIYers who cut a variety of medium to thick metals and need a dependable, long-lasting blade supply. The higher cobalt content and four-stage heat treatment help the blades resist wear and heat, making the set a practical, cost-effective alternative to higher-priced brand-name blades.

Frequently Asked Questions

Will these blades fit my reciprocating saw?
Yes, the blades use a 1/2 in universal shank designed to fit most Sawzall-style reciprocating saws from common manufacturers.

What metal thickness can these blades cut?
They are intended for medium and thick metals roughly from 1/16 in up to 5/16 in, including pipes, steel plate, and auto body panels.

How do they compare to other bi-metal blades?
The 9% cobalt M42 construction offers improved heat and wear resistance compared with lower-cobalt bi-metal blades, giving longer life in many cutting scenarios.