TONCHEAN Diamond Hole Saw Kit ø 6-50 mm, Adjustable Hollow Drill Bit, Suction Cup Hole Saw, High Precision with Drill Bit for Glass, Marble, Tile, Ceramic, pvc

【Diamond Hole Saw】 There are 10 sizes in the set to meet different needs. Including 6mm, 8mm, 10mm, 12mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm. These are made of high-strength carbon steel, making these diamond drill bits durable 【Easy to Use】High-quality diamond coated diamond hole saws can increase drilling speed and cut smoothly in seconds without bending edges 【Advantage】With the adjustable suction cup drill guide device, the maximum panel opening length is 3-1/4 inches, which is large enough to accommodate all sizes of hole saws 【Special Design]】Large through holes on the drill bit facilitate the entry of cooling water and the escape of chips and other particles from the drilling, ensuring smooth drilling and facilitating the drilling process 【Adjustable Hole Saw Guide】Adjustable hole saw drill guide with suction cup. Suitable for all sizes of drill bits, up to 3.5 inches in drilling diameter. Removable ball bearing, two modes (3 or 4 ball bearing mounting) are your choice, just