IRWIN IRW10504522 Bi-Metal Hacksaw Blades 300mm (12in) x 32 TPI (Pack 100) at Building Materials – IRWIN Bi-Metal Hacksaw Blades are safer than HSS blades. They are flexible, shatter resistant and are suitable for use on a variety of metals. Price: £189.74 (Price correct on 2024-08-19)