Features 1、Best Drilling Effect: Industrial grade carbon steel, nickel plated coating can anti corrosion. Thickened diamond coating provide excellent cutting strength, high accuracy and smooth cutting, and the best drilling effect 2、10 Different Drill Bits: This diamond hole saw set is equipped with 10 different drill bits to meet different needs 3、Practical Large and Small Holes: Large clearance hole facilitates cooling water entry, prevent chips and particles from being discharged, ensure smooth punching and easier drilling. Small hole is convenient to pull out debris when stuck 4、For Various Sizes: Adjustable drill guide fixture with suction cup, the maximum opening length of the plate is 7.62-2.54cm, which is large enough. With detachable ball bearing, suitable for hole saws of various sizes 5、Remove Many Materials: Can be used to remove glass, marble, tiles, ceramics, PVC or other materials Specification Item Type: Hollow Drill Hole Saw Set Material: ABS+carbon steel Purpose: Hollow drill set Hole Saw Drill Bit Diameter: Approx. 6mm / 0.2in 8mm / 0.3in 10mm / 0.4in 12mm / 0.5in 20mm / 0.8in 25mm / 1in 30mm / 1.2in 35mm / 1.4in 40mm / 1.6in 50mm / 2in Screwdriver Length: Approx. 12.6cm / 5in Package List 1 x Hole Saw Guidance Fixture 10 x Hole Saw Bit 1 x Screwdriver 1 x User Manual