Uxcell a15122500ux0422 42mm Diamond Coated Hole Saw Drill Bits Cutting Diameter: 42mm/1.65"; Product Name: Glass Hole Saw Material: Metal, Diamond Particles; Package Content: 1 x Glass Hole Saw Weight: 45g; Shank Size: 8 x 19mm/0.31" x 0.75"(D*L) Total Length: 55mm/2.17"; Main Color: Silver Tone Total Size: 55 x 42mm/2.17" x 1.65"(L*); Side Hole Size: 13 x 5mm/0.51" x 0.2"(L*W)