KATSU Trailer Jack Block 2PCs Pack, Support up to 11,000 lbs, for RV Camper Travel Trailer 5th Wheel, Hydraulic Jack Foot, Tongue Jack Post/Wheels, Round and Square Stabilizer

【Versatile】Supports almost any tongue jack, wheel jacks, post jack, 9" round 5th wheels hydraulic jack foot or scissor stabilizer and more ! specifically for RVs, trailers, and trucks. 【Tough and Durable】With upgraded internal structure and wider bottom edge design, single trailer jack block loading capacity: 8800 lbs-11000lbs. 【Stackable】Stackable design with carry handle, easy to move & stack, convenient to store and space saving. 【Post Hole】Featured with a recessed post hole that helps prevent post jacks from sliding. 【Stablility】Eliminated almost all movement and swaying in parked RVs and trailers (reduced pressure on RVs or trailers), stable positioned on any surface practically of grass, gravel, dirt, or asphalt.