15-Piece Diamond Drill Bit Set for Tile, Glass, Ceramic, Porcelain and Granite – 4 to 50 mm Hole Saws for Precise Drilling

General Description Our diamond hole saw set includes 15 pieces in various sizes, ranging from 6 mm to 50 mm, to meet all your drilling needs. Made of high-strength carbon steel with a nickel-plated finish, this tool is designed for durability and rust resistance. The high-quality diamond saw tip allows for fast, clean, and precise cuts, ideal for glass, porcelain, ceramics, and granite. Technical Specifications Material: High-strength carbon steel Finish: Nickel-plated Available sizes: 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 25 mm, 28 mm, 30 mm, 35 mm, 40 mm, 50 mm Usage For optimal drilling, it is recommended to maintain a speed of 800 to 1000 RPM and add water regularly to keep the drill bit fresh. Dry drilling is strictly prohibited.