H340 Hacksaw Blades Bi-Metal Carded Sutton Tools Bi-Metal HSS Hacksaw Blades are shatterproof, with superior cutting power & flexibility. 18 TPI: For 6-25mm materials eg pipe, angle iron & steel bar. 24 TPI: For 3-6mm materials eg conduit, heavy sheet metal & tubing. 32 TPI: For <3mm materials eg thin sheet metal & metal trim. All Sutton Tools hacksaw blades have 300mm hole centres to fit all standard size hacksaw frames. Colour coded and clear markings for easy identification 300mm pin hole centres fit all standard hacksaw frames Bi Metal HSS - Shatterproof blade with superior cutting power & flexibility Technical Specs: Pack of 3 Length 300 mm TPI 18/24/32