General description The Diamond Hole Saw is a multifunctional drill bit designed for use on various materials including tile, concrete, marble, and glass. With a diameter of 90mm, this tool is ideal for creating precise holes in hard surfaces. Technical specifications Diameter: 90 mm Design: Segmented for low cutting resistance Shank type: Universal triangular shank for enhanced torque and slippage prevention Installation Compatible with drill presses, workbenches, and hand drills (not suitable for impact drills) Drilling angle: Place at a 45° angle and drill vertically Recommended speed: Operate slowly at about 800-1000 rpm Usage Suitable for drilling into stone, ceramic, and glass Water should be added during drilling to cool the holes