CAMCO's RV stabilizer jack pads are used to help prevent jacks from sinking into the ground. Use them with stack jacks, trailer tongues, 5th wheel jacks and swing arm supports. They have a built-in handle and a storage strap is included for easy storage. They are constructed of durable UV stabilized resin for years of use. They heavy-duty construction and rib design are optimized for increased strength. Be sure to use with flat side down to help prevent slipping and sinking.