Set of 10 diamond hole saws, adjustable drill bits, drilling guide with suction cup for glass, tile, ceramic, porcelain, wood, 6/8/10/12/20/25/30/35/40/50 mm

【Diamond Hole Saw】 There are 10 sizes in the set to meet different needs. Including 6 mm, 8 mm, 10 mm, 12 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm. These are made of high-strength carbon steel, making these diamond drill bits durable.【Easy to Use】 High-quality diamond-coated hole saws can increase drilling speed and cut smoothly in seconds without bending edges.【Advantage】 With the adjustable suction cup drill guide, the maximum panel opening length is 3-1/4 inches, which is large enough to accommodate all hole saw sizes.【Special Design】 Large through holes on the drill bit facilitate the entry of cooling water and the exhaust of chips and other drilling particles, ensuring smooth drilling and simplifying the drilling process.【Adjustable Hole Saw Guide】 Adjustable hole saw drill guide with suction cup. Suitable for all drill bit sizes, up to 8.9 cm drilling diameter. Removable ball bearing; two modes (3 or 4 ball bearing mounting) are your choice; simply flip the panel over.