Feature 115PCS: There are 15 pieces drill bits in the package of different sizes that you can use them respectively to meet your needs. 2STAINLESS STEEL MATERIAL: Made of premium stainless steel material, the drill bits are strong and sturdy, rust resistant and corrosion resistant, ensures a long life span. 3FINE WORKMANSHIP: The hole opener bits are well crafted with smoothly appearance and incisive edges, providing fast and cleaning cutting. 4WIDE APPLICATION: This hole opener drill bit set is widely used for emery, glass, marble, granite, ceramic tile, stone tile, and other materials. 5IDEAL REPLACEMENT: This drill bits set is an ideal replacement for the old and damaged parts for excellent cutting performance.SpecificationItem Type: Marble Hole OpenerMaterial: Stainless Steel Size: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in, 12mm / 0.47in, 14mm / 0.55in, 16mm / 0.63in, 18mm / 0.71in, 20mm / 0.79in, 22mm / 0.87in, 25mm / 0.98in, 26mm / 1.02in, 28mm / 1.1in, 30mm / 1.18in, 40mm / 1.57in, 50mm / 1.97in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x 6mm Hole Opener1 x 8mm Hole Opener1 x 10mm Hole Opener1 x 12mm Hole Opener1 x 14mm Hole Opener1 x 16mm Hole Opener1 x 18mm Hole Opener1 x 20mm Hole Opener1 x 22mm Hole Opener1 x 25mm Hole Opener1 x 26mm Hole Opener1 x 28mm Hole Opener1 x 30mm Hole Opener1 x 40mm Hole Opener1 x 50mm Hole Opener