6" RV Leveling Blocks with Stackable Design

HEAVY-DUTY SUPPORT & JACK PROTECTION：Made from high-performance UV-resistant polymer, every block supports up to 10,000 lbs, compatible with trailers rated up to 40,000 lbs GVW. It shortens the necessary jack travel, effectively curbs trailer sway, boosts overall stability, cuts jack wear for lasting reliable performance. STACKABLE DESIGN：Each block provides 5.9 inches of lift. Stack each one to add an extra 3 inches in height, allowing you to buy as needed for your ideal leveling height. Lockable design ensures stable stacking and prevents slipping even when stacked. UNIVERSAL FIT FOR MOST TRAILER JACKS: Compatible with nearly all tongue jacks, post jacks, foot jacks, scissor jacks, and stabilizer jacks—both round and square. Ideal for travel trailers, RVs, 5th wheels, boat trailers, horse trailers, campers, and more. BUILT FOR ALL TERRAINS：With the design of reinforced base, our block allows you to stabilize your trailer on gravel, grass, dirt, and pavement - without sustaining damage itself. EASY TO USE & CARRY: Built side grip hole for effortless placement and removal for the block. The rope on another side lets you hang the block on your RV wall for space-saving storage. Includes a storage bag for convenient organization.