uxcell 22mm Dia. Diamond Coated Hole Saw Cutting Glass Hardware Product Name : Glass Hole Saw;Hole Saw Diameter : 22mm Shank Bit Size : 24 x 8mm (L*D);Total Length : 55mm Material : Metal, Diamond Particles Coated;Color : Silver Tone Weight : 25.2g Package Content : 1 x 22mm Glass Hole Saw