These Dunnet Tools Hacksaw Blades Are Perfect For Both Professionals And Diyers Alike. Sold In Multipacks, These Will Ensure You Always Have A New Fresh Blade When Starting A New Job. These Saw Blades Are Manufactured Using A High Speed Steel (hss). This Steel Will Help To Ensure Both Cutting Performance And The Longevity Of The Tool. Featuring A Universal Design, These Hacksaw Blades Are Manufactured With The Purpose Of Being Compatible With Most Of The Main Brands Of Hacksaw Handles. These Blades Feature An Impressive 24 Tpi (teeth Per Inch). This Helps To Provide An Excellent Cutting Tool Suitable For Most Jobs And Projects Where Cutting Metal Is Required. Specifications: 12 Piece 12" Inch Hacksaw Blade Pack. Suitable For Most 300mm Hacksaw Handles. Manufactured From Hs Steel. Different Sized Packs Are Available.