Surge Brake Coupler Lock for coupler requiring 3-3/8" opening. Only lock for surge brake style couplers. Available for surge brake couplers requiring a quarter inch pin and a tow and a half inch opening or 3-3/8 inch opening. All DeadBolt locks utilize hi-tech materials and state of the art engineering to bring the ultimate in performance, valve and style. * All Weather Grips for easier handling in cold, wet, or high temperature weather. * Weatherproof lock cylinder for trouble free use. * Strong, reversible automotive style key is easy to insert and remove .even with gloves on. Fits comfortably on your key ring. * Double chrome plate provides automotive grade durability and corrosion resistance. * Strong, tough one piece machined carbon steel pin. * Non-skid grips provides comfortable grip even in cold, wet weather. * Patented screw and lock security. Rugged, pick proof threaded connection that would not false lock. * Keyed alike. No problem. Two keys covered under US patents 4,711,106 and 5,284,038.
