LOCK STUD SET 12mm X 1.25mm

A 12mm x 1.25mm locking stud set is a specialized security fastener kit used to prevent wheel theft. The "12mm" refers to the thread diameter, while "1.25mm" specifies the fine thread pitch. These sets typically replace one standard lug nut or bolt on each wheel with a "locking" version that can only be removed using a unique, matching key included in the set.