Tookie Drill Dust Cover - Drill Dust Collector For Power, White, Size: 160Mm Description: ? Suitable for: bimetal hole saws, glass hole saws and other hole saws whose handle diameter does not exceed 10mm/0.39 inches and the handle length exceeds 20mm/0.79 inches. ? Stable: threaded occlusion, embedded bearing, simple assembly and disassembly, and can be attached to the wall. ? Elastic: transparent and elastic, it can be close to the wall when used, effectively preventing dust from spreading everywhere. ? Wide range of applications: moderate size, suitable for 16mm/0.63 inch-158mm/6.22inches hole openers. ? Note: Only the dust cover is included, and the hole opener is not included.