PRO 2.5cm Steel Watch Screwdriver Sharpener Sharpen Jig Watchmaker Repair Tools by SUPERWHOLE Brand new.Bearing Steel Material Overall Length : 2-1/4".Diameter of Wheels : 1".Diameter of Cylinder : 1/2" Can Hold Handles from 2.5mm to 5mm in Diameter.Great for Sharpening Precision Screwdrivers, Fixing Damaged Blades Etc Adjustable Screw Holds Precision Screwdriver in place at the proper Angle for Sharpening Package:1 x Watch Screwdriver Sharpener