Dutton Lainson Trailer Safety Chain Class 1 24" Showers Available in 4 sizes from 4266 BKBK 06 Available in 4 sizes from 15 to 50 Discover a brand new level of responsiveness in a rod paired with the durability to reel in everything you hook 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