Features 1、3 Flute Bit: The hole opener bit is 3 flutes design, which high drilling efficiency and not easy to collapse. 2、High Speed Steel: Made of excellent high speed steel material, with high hardness and wear resistance, no heat during use. 3、Low Resistance: The saw blade has large gaps, which can reduce the resistance when drilling and quickly remove chips. 4、High Efficiency: The high speed steel hole saw has fast drilling speed, with round cut aperture and no gaps. 5、Applicable Scene: Cutting diameter of 26mm, suitable for marble, ceramic tiles, walls and other stones. Specification Item Type: Hole Opener Bit Material: High speed steel Cutting Diameter: Approx. 26mm / 1in Package List 1 x Hole Opener 1 x Hex Wrench 1 x Spring