3 New Screwdrivers Set Watch Optical Euro Tool Screw Link This is a new set of 21 screwdrivers Designed especially for watch makers These screwdrivers are nickel-plated to prevent rust Reversible, double-ended blades and threaded ferrules for easy replacement with color identified heads for quick selection You receive 3 of each size: Silver Screwdrivers 1.27 mm Green Screwdrivers 1.20 mm Teal Screwdriver that measure0.95 mm Blue Screwdriver 0.88 mm Gold Screwdriver 0.78 mm Maroon Screwdriver 0.73 mm Black Screwdriver 0.58 mm