Feature:1. Wide Application: This hole opener can be applied for marble, ceramic tiles, walls and other stones.2. Larger Cut Out Design: A larger cut out design, which reduces the resistance when opening holes.3. Fast Drilling Speed: The hole opener has a fast drilling speed, and the hole diameter is round and has no gaps.4. High Speed Steel: These hole openers are made of high speed steel, resistant to corrosion, fine workmanship, and pointed.5. High Drilling Efficiency: High accuracy, high drilling efficiency, particularly impact and wear resistance.Specification:Item Type: HSS Hole SawMaterial: High Speed SteelCutting Diameter: Approx. 28.5mm / 1.12in Package List:1 x Hole Saw 1 x Hex Wrench