Stanley Proto J1200F-MASD 15 Piece 12 Point Metric Combination Wrench Set Set Includes: 7mm through 21mm Wrenches and Tool Roll Wrench self-aligns on the fastener which helps save time. Anti-Slip Design (ASD) open end Proto TorquePlus wrenches are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials. Satin finish provides corrosion resistance and a slip resistant grip.