Features 1、15PCS: There are 15 pieces drill bits in the package of different sizes that you can use them respectively to meet your needs. 2、STAINLESS 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. 3、FINE WORKMANSHIP: The hole opener bits are well crafted with smoothly appearance and incisive edges, providing fast and cleaning cutting. 4、WIDE APPLICATION: This hole opener drill bit set is widely used for emery, glass, marble, granite, ceramic tile, stone tile, and other materials. 5、IDEAL REPLACEMENT: This drill bits set is an ideal replacement for the old and damaged parts for excellent cutting performance. Specification Item Type: Marble Hole Opener Material: 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 Package List 1 x 6mm Hole Opener 1 x 8mm Hole Opener 1 x 10mm Hole Opener 1 x 12mm Hole Opener 1 x 14mm Hole Opener 1 x 16mm Hole Opener 1 x 18mm Hole Opener 1 x 20mm Hole Opener 1 x 22mm Hole Opener 1 x 25mm Hole Opener 1 x 26mm Hole Opener 1 x 28mm Hole Opener 1 x 30mm Hole Opener 1 x 40mm Hole Opener 1 x 50mm Hole Opener