Master Lock Lock 2In Trailer-Most Brands MSL-34AT

Guard against towaway theft of unattended travel, boat, camping, snowmobile, horse, mobile home, and utility trailers. Exclusive locking device. Easy to use. Powerful protective housing covers trailer coupler, guards against towaway theft. Pin tumbler locking security. Rust resistant, baked epoxy acrylic finish. Complete with locking wrench and 2 keys.
Description For most 2" couplers - Acme, Atwood, Big Boy, Dico, Fulton, Ideal, Lainson, Valley and others. Also for Valley 1-7/8" Couplers.