Set of 7 Screwdrivers with Sharpening Stone this set includes numbers 3 to 9 for baguette and pocket sizes, in polished hardwood stand with carborundum sharpening stone built into base and a side compartment for spare blades. This set is designed especially for watchmakers. Nickel-plated to prevent rust. Reversible, double-ended blades and threaded ferrules for easy replacement. Colour identified heads for quick selection.