Speaker 1: Today we're gonna take a look at the Atwood cast-iron amp lock trailer coupler lock for flat lipped 2" and 2-5/16" ball couplers. Now, this heavy-duty coupler lock will prevent trailer theft by preventing hookup. The locking pin right here, this will engage your coupler's ball socket like your trailer ball does and the locked body, this whole portion here, will fit over the… see more >