Designed specifically for the Shift Lock gooseneck coupler (has silver handle)
Coupler lock kit fits all 30K Shift Lock gooseneck coupler
3 piece locking kit (Includes Base, Slide Attachment & Disc Lock with 3 keys)
Lock your gooseneck coupler to prevent trailer theft
Gooseneck stem set bolt lock kit or Shift Lock coupler & set bolt lock kit package combo sold separately (set bolt lock kit locks the stem to the trailer)
The Shift Lock gooseneck coupler is featured on Shocker 9″ Gooseneck Extensions, Shocker Gooseneck Solid Stems, & Gooseneck Surge Air Hitches.  
Does NOT work with bulldog or wallace forge or ease guide couplers
Only works with Shocker Gooseneck hitches with the Shift Lock coupler (has a silver handle)