Sealey WHS51 HSS Hole Saw Blade 51mm Manufactured from Bi-Metal M3 steel with milled teeth for fast accurate cuts and long-life. WHS51 Features Manufactured from Bi-Metal M3 steel with milled teeth for fast accurate cuts and long-life WHS51 Specification Model No WHS51 Brand: Worksafe Diameter: 51mm What is included: 1 x Sealey WHS51 HSS Hole Saw Blade 51mm