uxcell 12mm Dia Diamond Coated Drill Bit Tile Glass Hole Saw UXCELL (U excel !) is the sole authorized Seller of uxcell products Cutting Hole Diameter(Approx.) : 12mm/ 0.47";Side Hole Size : 10 x 2.8mm/ 0.39" x 0.11"(L*W) Shank Size (Approx.) : 7 x 20mm/ 0.27" x 0.8" (Diameter*L);Total Length : 50mm/ 1.9" Color : Silver Tone;Weight : 10g;Product Name : Glass Hole Saw;Main Material : Metal, Diamond Particles Package Content : 1 x Glass Hole Saw