Features DIAMOND COATING: the hole cutter is made of carbon steel, with coated hole saw drill, extremely sturdy and durable SUITABLE FOR A VARIETY OF MATERIALS: Can be used for porcelain, glass, marble, ceramic, stone and granite etc. Good quality drilling: thick blades with soldered design, very suitable for drilling clean and precise holes and cutting perfect circles Longer service life: high performance hole saws have superior performance and durability than other ordinary hole saws 35 mm punching depth: the sharp cutting head brings a fast drilling speed, a punching depth of up to 35 mm, useful and practical Function: 1. COATING: The hole cutter is made of carbon steel, with coated hole saw blade, extremely sturdy and durable2. SUITABLE FOR A VARIETY OF MATERIALS: Can be used for porcelain, glass, marble, ceramic, stone and granite etc.3. Good quality drilling: thick blades with brazed design, very suitable for drilling clean and precise holes and cutting perfect circles4. LONGER LIFE: High performance hole saws have superior performance and durability than other ordinary hole saws5. 35mm Punching Depth The sharp cutting head brings a fast drilling speed, punching depth up to 35mm, useful and practical. Specification:< a>Item Type:DrillMaterial: Carbon Steel + CoatingPunching Depth: Approx. 35mm / 1.38-inchHandle: Triangular HandlePackage List:1 x Drill1 x Storage BoxNote:Start drilling at a 45 degree angle and drill vertically when the edge is cut to avoid the hole saw slipping. Never let your drill run dry, use water to keep it moist and cool. Package List 1 x Diamond Drill Bit 1 x Storage Box