Sealey WHS57 HSS Hole Saw Blade 57mm Manufactured from Bi-Metal M3 steel with milled teeth for fast accurate cuts and long-life. WHS57 Features Manufactured from Bi-Metal M3 steel with milled teeth for fast accurate cuts and long-life WHS57 Specification Model No WHS57 Brand: Worksafe Diameter: 57mm What is included: 1 x Sealey WHS57 HSS Hole Saw Blade 57mm