【4 SIZE IN 1】4 different diameters in one package: 6mm, 8mm, 10mm, 12mm. In addition, the 4-piece diamond drill bits are placed in 4 separate plastic boxes, which you can find and use easily. 【DURABLE】 The high-quality and temperature-resistant diamond grit (# 40/45) for efficient and clean holes. Filled with cooling wax and suitable for dry drilling. 【HOW TO USE】(1). Place the diamond drill bit at an angle of approx. 30° to the surface of the material and start drilling carefully. (2). Tilt the drill to a vertical position once a notch has been made. (For longer life, water or coolant is recommended) 【MULTIPURPOSE】Perfect for porcelain, glass brick, ceramic, ceramic tile, granite, marble, quartz, limestone, fiberglass terrazzo, masonry, quartz stone and sandstone. 【WIDE APPLICATION】 1/4 inch hex shank (6 ,35mm) which fits all drills, drill chucks and lightweight rotary hammers from Bosch, Hilti, Metabo, Makita, Milwaukee etc. Specification: Hex Shaft: 1/4inch (6.35mm) What will you
