Hacksaw Blades, 2-pack

A fresh hacksaw blade cuts cleaner than a tired one. The teeth are sharper, the kerf width is consistent, and the blade tracks straighter through the cut. The 750.1B is the metal-cutting blade we stock for the 750B hacksaw, sold as a 2-pack so there's always a backup on the bench.

The specifics: 24 teeth per inch, 12" / 300 mm length, high-speed steel construction. The 24-TPI tooth pitch is the right cut for the metals a bike shop typically encounters; steel steerers, aluminum seatposts, brass cable-end caps. Finer TPI (32 TPI) is for thinner materials and cleaner cuts; coarser (18 TPI) is for thicker materials where chip clearance matters. 24 TPI is the working middle.

When the blade is done

Blades dull through three modes: tooth wear (the cutting edges round off after many cuts), tooth break (a tooth snaps off, usually after the cut starts to bind), and frame-side fatigue (the blade's body cracks at the pin holes after many tension-and-release cycles). All three show up the same way in the cut: slower progress, drift off the line, and ragged edges. When a blade starts to read these symptoms, replace it. A new blade saves more time than it costs.

The 2-pack is sized for the rhythm of a working shop. One blade in the saw, one in the toolbox, replace both when both are used up.

For carbon-fiber cuts

A metal-cutting blade on carbon fiber leaves a frayed edge because the teeth pull fibers up out of the resin matrix. For carbon, switch to the ceramic-style abrasive blade 750.1CAR. Same frame, different blade.

Specs

• 24 TPI tooth pitch
• 12" / 300 mm length
• High-speed steel construction
• 2-pack
• Compatible with 750B hacksaw frame
• Article number: 750.1B

Built in Zreče, Slovenia

Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 750.1B is the standard-issue replacement blade for the 750B hacksaw; same blade we'd stock in any workshop running the 750B as the everyday cutting saw. Spare blades are the kind of part where reliability matters more than novelty, and the standard high-speed steel construction is what consistently delivers it.

Pro tip from our mechanics

A dull blade is the second-most-common reason a hacksaw cut wanders off the line. (The first is a flexing frame.) Both are mechanic-controlled: tension the blade hard, replace it before it's exhausted, and the cuts stay square. Our workshop hand tools guide covers the cutting layer of the shop in detail: Workshop hand tools every bike shop needs →