Proto J1200GHASD 10-Pieces SAE Combination Wrench Set, 6 Point. FEATURES. Satin finish provides corrosion resistance and a slip resistant grip. 6 point box end allows for large wrench to fastener contact area which helps prevent rounding of the fastener. Anti-Slip Design (ASD) open end. Patented locking grooves help prevent the wrench from slipping off the fastener when turning. The arched surfaces are designed to spread the contact forces over a greater area. Loads are kept off the corners of the fastener which helps prevent fastener rounding. Box ends incorporate the TorquePlusT system. Proto® TorquePlusT wrenches are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials. The TorquePlusT design is a high performance drive configuration which allows for quick and easy wrench engagement to the fastener flats, not the corners. The TorquePlusT configuration employs a radius-corner design, shifting contact area and stress away from the fastener corners and distributing contact stresses over. Why Shop With Us? WORLD CLASS CUSTOMER SERVICE. Our support agents are here to assist you, Monday through Friday. Photo evidence of damages may be required.