OULEME Trailer Jack Leveling Blocks 4-Pack — 15,000 lb Support, Fits 8.5" Pad for RVs, Tongue & Scissor Jacks

OULEME Trailer Jack Block is a heavy-duty, interlocking leveling block set that supports up to 15,000 lb per block and fits square or round jack feet, tongue jacks, scissor stabilizers and wheels.

When you park your RV, trailer or fifth-wheel on uneven ground, a reliable jack block makes setup faster and safer. These OULEME blocks are molded from high-density polypropylene engineered to resist crushing and deformation, and their anti-slip features let you stack multiple layers with confidence. The design fits common jack foot sizes and tongue wheels so you can build the lift you need without improvising with wood or loose rock.

How do these blocks handle different jack types and wheel sizes?

OULEME blocks are shaped to accept square jack pads, round jack feet up to 9 inches, 2" tongue jack posts, 6x2" tongue wheels and scissor stabilizer feet. Their top cavity and flat surfaces provide secure seating so jacks and wheels won't slip off under load. Using them reduces strain on the jack and distributes force over a larger area.

• Compatible with square and round jack feet (round up to 9")
• Accepts 2" tongue jack posts and 6x2" tongue wheels
• Works with scissor stabilizer feet and similar supports
• Solid seating surface prevents side-slip during lifting

What are the dimensions and stacking capabilities?

Each block measures 10" x 10" at the base and 8.5" x 8.5" at the top with a single-block height of 4.85 inches. You can double-stack to reach about 8.2 inches, and the molded interlocking grooves lock layers together for a stable column. The anti-slip base keeps the stack from migrating on firmer ground while you level.

• Base footprint: 10" x 10", top: 8.5" x 8.5"
• Single height: 4.85", double-stacked ~8.2"
• Interlocking grooves for secure multi-layer stacks
• Anti-slip base for improved ground contact

How strong and durable are these leveling blocks?

Each OULEME block is rated to support up to 15,000 pounds, thanks to high-density polypropylene construction that resists crushing and keeps its shape over repeated use. The molded design spreads load across the full surface, reducing stress points that cause failure in cheaper blocks. They are built for outdoor conditions and frequent use with RVs and trailers.

• 15,000 lb capacity per block
• High-density polypropylene resists deformation
• Molded load-bearing structure avoids weak spots
• Fade- and moisture-resistant for outdoor storage

How do I use them safely while leveling my trailer?

Place a block on firm, level ground before lifting and center the jack or wheel in the cavity. Raise the jack slowly, checking that the block stays seated and the stack remains vertical; add or remove blocks as needed for fine adjustment. For higher lifts, interlock and stack blocks evenly and avoid exceeding recommended stacking heights.

• Set block on compact ground or use a base layer for soft soil
• Center jack foot or wheel in the top cavity while lifting
• Stack evenly with interlocks engaged for taller lifts
• Do not exceed safe stacking recommendations; inspect before travel

Who is this for? These OULEME leveling blocks are for RV and trailer owners who want a rugged, reusable solution for stabilizing and leveling on campsites, driveways and work sites. They suit camper owners, fifth-wheel travelers, tow vehicle users and anyone who needs reliable jack support without improvising. The 4-pack gives flexibility for light to moderate lifts and pairs with other OULEME leveling products for taller setups.