EKON OX BLOX Trailer Jack Block — 10,000 lb Capacity, Stackable Heavy-Duty Support Pad (Black)

OX BLOX trailer jack blocks are heavy-duty, stackable support pads rated to hold up to 10,000 lb each, built to stabilize and level jacks for RVs, trailers, and equipment.

Designed and manufactured in the USA from 100% recycled compression-molded plastic, the EKON OX BLOX provide a durable, weather-resistant base for tongue jacks, post jacks, scissor jacks, stabilizer feet and more. The patented shape prevents sinking and side-to-side movement on soft or uneven surfaces, while built-in handles and a compact footprint make them simple to store and position. Whether you need reliable support at a campsite, on a job site, or in long-term storage, these blocks aim to replace fragile wooden or thin plastic pads.

How do OX BLOX keep a trailer steady on soft ground?

The patented geometry spreads weight across a larger area and resists lateral movement, so jacks won’t tilt or sink in gravel, dirt, or grass. The compression-molded recycled plastic is both UV and temperature resistant, preserving shape and strength season after season.

• Wide base disperses load to prevent sinking
• Anti-wobble design stabilizes jacks on uneven terrain
• UV-resistant material keeps integrity outdoors
• Works with round and square jack feet

Can I stack OX BLOX for more height and still trust their rating?

Yes — OX BLOX are engineered to be stacked safely for extra lift while maintaining their 10,000 lb per-block capacity. The interlocking profile aligns stacked units to keep the column secure under heavy loads, letting you build the height needed without sacrificing stability.

• Stackable interlock design for secure vertical stacking
• Rated to 10,000 lb even when multiple blocks are used
• Use stacks for leveling campers, 5th wheels, or trailers
• Compact footprint saves storage space in trucks or bays

What types of jacks and trailers are compatible with these blocks?

OX BLOX accept a wide range of jack feet and appliance contact points — from tongue and post jacks to scissor and stabilizer jacks for boats, horse trailers, and work trailers. The unit works with both round and square foot pads and serves as a dependable leveling or support pad for many towing setups.

• Compatible with tongue jacks, post jacks, foot jacks, scissor jacks
• Suitable for travel trailers, 5th wheels, boat trailers, horse trailers
• Also useful under stabilizer pads or jack stands
• Stable on pavement as well as soft ground

How portable and durable are these blocks for regular use?

Each block weighs just over eight pounds and includes molded side handles for easy carrying and placement. The recycled plastic construction resists cracking from temperature swings and prolonged sun exposure, so the blocks remain serviceable after many seasons.

• Lightweight — about eight pounds per block
• Molded handles for quick repositioning and storage
• Compression-molded from 100% recycled plastic in the USA
• Built to resist UV damage, freezing, and heat cycling

Who this is for: OX BLOX are aimed at RV owners, boat and horse trailer users, contractors, and anyone who needs a reliable, long-lasting support surface for jacks and stabilizers. If you replace cracked wooden blocks, flimsy pads, or want a stackable, high-capacity solution that won’t rot or crush, these blocks provide a maintenance-free alternative that travels easily and performs in varied conditions.