Curt Universal Tri-Ball Trailer Coupler Lock Fits 1-7/8" #23082Highly theft and tamper resistant design with built in safety measures Unique tri ball lock inserts into coupler and secures latch with lasso lock Coupler lock can also be used while towing to secure the trailer Simple lasso design keeps all components together, avoiding lost pieces Glass filled orange polymer for high strength and increased visibility Universal design fits all standard coupler sizes: 1 7 8", 2" and 2 5 16" 1 4" pin allows adjustment