4 Pack Bike Trailer Hitch Lock Washer Replacement Non Slip Metal Locking Ring for Bike Trailer Hitch Coupler Connector Bicycle Cargo Trailer Bike Dog Trailer Carrier Cart Hitches
Package Included: 4x Metal Lock Washer.
Sizes: Inner Dia. 12.31 mm, Outer Dia. 27 mm.
Fits for Kids / Pet Bike Trailers.
Material: Metal.
Color: Black.