TOWKING 4.3" Trailer Jack Block 12000 lb Capacity — 4.3" Height, UV-Stable Polypropylene with Anti-Tilt Base

TOWKING's 4.3" H 12000lbs Trailer Jack Block is a rugged, UV-stabilized polypropylene leveling block engineered to support heavy trailer jacks and stabilize RVs quickly and safely.

Whether you're parking for the night at a campground or setting up at a remote site, a dependable jack block eliminates wobble and prevents sinking on soft ground. This single-piece 4.3-inch block handles up to 12,000 lbs and fits most jack feet, giving you a compact, travel-ready solution for tongue jacks, scissor jacks, wheels and more. Built for repeated outdoor use, the block combines a wide platform, a tapered anti-tilt base and practical features like drainage and an ergonomic grip.

How does this block keep a trailer stable on uneven or soft ground?

The block's cone-shaped base and multiple reinforcing ribs spread load and increase ground contact, reducing tilt and sinkage. Its larger platform gives a firm seat for jack feet while the anti-tilt geometry locks the jack in place under load.

• cone base with 8 support ribs to resist lateral shift
• 10" platform area distributes weight over a wider footprint
• 2.5" center hole accommodates standard jack feet securely
• UV-stabilized polypropylene resists cracking and deformation

Will this block fit my trailer or RV jack?

The TOWKING block was designed to be universally compatible: the center opening and broad platform accept most common jack foot sizes and styles. It works with tongue jacks, scissor jacks, fifth-wheel landing legs and wheel support applications, making it a versatile item to carry whenever you travel.

• 2.5" hole fits standard jack foot diameters and shapes
• platform design supports both round and square feet
• also suitable for wheel chocking and temporary leveling use
• single-piece construction eliminates assembly steps

How quickly can I set up and stow the TOWKING jack block?

The block is purpose-built for fast deployment: place it under the jack foot and lower until the jack seats. Its ergonomic grip, drain holes and included travel accessories streamline setup, while the lightweight material and compact dimensions make it easy to carry.

• quick-seat geometry for rapid placement
• integrated grip for one-handed handling
• drain holes prevent water pooling and speed drying
• comes with a 600D storage bag and quick-strap for transport

What durability and travel features should I expect?

Constructed from UV-shielded polypropylene, the block resists sun damage and long-term outdoor exposure. The heavy-duty load rating and reinforced ribs are meant to tolerate repeated use under substantial weights, while the included bag and strap keep the set organized and protected in transit.

• 12,000 lb rated for heavy trailer and RV applications
• UV-resistant material reduces weather-related wear
• reinforced ribs maintain shape under repeated loading
• storage bag and quick-strap included for convenient packing

Who is this for: Travelers, RV owners and trailer operators who need a compact, dependable leveling solution will find the TOWKING 4.3" jack block useful. It suits weekend campers, full-time RVers, contractors who move equipment, and anyone who wants a lightweight, durable way to stabilize jacks on mud, gravel, grass or uneven sites. Carry one or a set to add immediate stability and peace of mind at every stop.