Master Lock Trailer Coupler Lock 1-7/8" & 2" (1-7/8" & 2")

The Master Lock No. 377DAT features a trailer coupler lock, designed to fit 1-7/8in (48mm), 2in (51mm) and most 2-5/16in (59mm) trailer couplers. The advanced locking mechanism provides resistance to picking and prying. The Limited Lifetime Warranty provides peace of mind from a brand you can trust. Fits 1-7/8in (48mm), 2in (51mm) and most 2-5/16in (59mm) trailer couplersAdvance locking mechanism resists picking and pryingEasy to install and removeResists rust and corrosion BEST USED FOR: OUTDOORSMarine & Offshore SecurityTrailers, Trucks, & TowingTrailers, Vans & Moving Trucks