Description: Material: Stainless Steel Size(L x W): Approx. 5.5 x 2cm/2.17 x 0.79inch Can Hold Handles from 2.5mm to 5mm in Diameter Adjustable spring action tool is used to hold watchmakers screwdrivers at the correct angle and the two wheels at either end allow easy rolling along the surface of a sharpening stone abrasive or polishing paper like emery paper. Great for Sharpening Precision Screwdrivers, Fixing Damaged Blades Etc Package Includes: 1 Piece x Watch Screwdriver Sharpener