Custom metal foot, a pre-loaded SnapPad, and every little widget you need to revamp your rig. Increasing your grip on the ground by a whopping 89% to 274%. Works with Most Scissor Jacks (Excluding BAL® LoPro & Weize® 7500)and made from American recycled rubber. For Travel Trailers, Pop-up Campers, Teardrop Trailers and Fifth WheelsShake tested by a third-party lab to military standards (MIL-STD-810H)Total assembly weight: 5.4 lbs per foot, 10.8 lbs per 2-packMetal foot: 1/4" steel, tuxedo black powder coat, 5.5" X 5.5"Replaces current scissor jacks with near universal bolt hole pattern for mounting