Durasafe Universal receiver / coupler lock combo set is stainless steel - fits couplers 1/2" to 3/8" with incremental adjusjustments each 1/8" and fits class II, III and IV receivers. 1/2" or 5/8" diameter receiver pins included. Both coupler and receiver locks keyed alike in set.
Fits all wheel types and is compact for easy storage. Made of chrome vanadium heat treated steel with deep thin-wall dual sockets. Includes a storage pouch. Fits four most common sizes: 17mm, 21mm, 19mm, 22.2mm.