Dutton Lainson Trailer Safety Chain Class 1 24" Shorts soft pillow gently braces the 10222 025 0015 soft pillow gently braces the tired child‘s head even in the corners and supports a relaxing nap share observations in real time and find separated friends Heavy duty Class 1 welded link chains for trailers up to 2000 lbs Zinc plated finish to resist rust with heavy steel hook and safety clip that latches to keep chains attached to tow vehicle Features a chain size of 3 16 and mounts with 3 8 bolts This product meets SAE and V 5 standards Two 24 chains are included per package NOTE Do not mount chains to trailer tongue with the same bolts used to mount the coupler Cross safety chains under coupling allowing only enough slack for turns