SnapPads attach permanently to your RV leveling jacks, so you don’t have to carry around blocks of wood or plastic blocks to level your RV or Motorhome. Simply snap! them on one time, and you’re all set. Hardy recycled rubber construction. SnapPad Mini: For 6 & 5.5 round jack feet, found on Travel Trailers and Truck Campers SnapPad BF: For 7 square & 10 octagon jack feet, found on a variety of rigs SnapPad XTRA Round: For 9 round jack feet found on Fifth Wheels & Class A Motor homes SnapPad XTRA Square 5 : XTRA Square 5 SnapPads fit Travel Trailers featuring LCI 4-point power stabilizers PSx1 & PSx2 systems with 5.5-5.625 square jacks SnapPad XTRA XL: For 9 & 12 round jack feet found on Class A Motor homes SnapPad XTRA XL LUX : For Fifth Wheel that has two 12 and four 9 round jacks. Set of 6 rubber boots SnapPad Rival: For RVA 8 & 10 round older legacy models SnapPad Hi Way: For 8 & 10 round jack feet found on a variety of Motor homes SnapPad Hi Way Bus: For 8, 10 & 11.5 round jack feet found on Class A Motor homes SnapPad EQ Compact: Made to fit Equalizers 7 square landing feet, or 7 round BAL landing feet SnapPad EQ: For 10 round & octagon jack feet, as well as 12 round jack feet, found on Class A & C Motorhomes. SnapPad EQ Grand: For 10 & 12 round & octagon jack feet found on Class A Motorhomes & some Fifth Wheels SnapPad EQ Stable: For 8 square Equalizer systems feet, commonly found on super C’s & horse trailers / commercial Trailer SnapPad PRIME: For 10 round jack feet found on mostly Class A Motorhomes