Camco RV Leveling Blocks 10-Pack FasTen XL Grey — Interlocking, Heavy-Duty Polymer for Stable Camping

Camco FasTen XL Leveling Blocks are a 10-pack of interlocking, heavy-duty polymer blocks that give campers a stable, adjustable foundation for RV wheels and jacks.

These XL FasTen blocks are built larger and stronger than standard leveling pads to help you create a reliable camping setup on uneven ground, gravel, or dirt pads. Each block measures 10 1/2" x 10 1/2" x 1 1/2" and features a quad-grid engineering pattern for increased load capacity and resistance to crushing. The set includes ten gray blocks with an integrated T-handle for convenient carrying and compact storage; stacks are intended for use up to 4 1/2" high.

How do these blocks make leveling an RV faster and safer?

Stackable, interlocking faces let you build the exact height and footprint needed without slipping or shifting under weight. The larger XL footprint distributes load over a wider area, reducing sinkage on softer surfaces. The built-in handle speeds transport and keeps blocks together when not in use.

• Interlocking design resists lateral movement under load
• XL 10 1/2" square footprint spreads weight to limit sinking
• Quad-grid internal structure increases compressive strength
• T-handle for carrying and locking blocks for storage

Will these work with my wheels, jacks, and axle types?

FasTen XL blocks are engineered to be compatible with single and dual wheels, tandem axles and common jack types including hydraulic, tongue, stabilizer and fifth-wheel jacks. Use them beneath wheels or directly under jack pads for a stable contact area. Always follow the manufacturer’s guidance and avoid stacks higher than 4 1/2".

• Suitable for single and double wheel setups
• Compatible with hydraulic, tongue, stabilizer, and fifth-wheel jacks
• Works for tandem axles and most camper/trailer configurations
• Recommended max safe stack height: 4 1/2"

How durable are these blocks and where are they made?

Constructed from a reinforced polymer with an engineered grid core, these XL blocks resist cracking and compressive failure under typical RV loads. They are designed to withstand repeated stacking and outdoor exposure when used as instructed. The product is manufactured in the USA and carries a patented design focused on long-term performance.

• Quad-grid interior for improved load distribution and strength
• Durable polymer resists weathering and repeated use
• Patented design and made in the USA
• 10-pack gives flexible stacking and redundancy

How do I store and transport the blocks when not in use?

The FasTen XL blocks include a built-in T-handle that makes carrying a stack simple and locks the pieces together for compact storage. Blocks nest and lock to minimize movement in your storage compartment and reduce time spent packing up at the campsite. Their 10-pack quantity gives you enough pieces to split between vehicle compartments or keep a full set together.

• Integrated T-handle for one-handed transport
• Blocks twist-lock for compact storage and transport
• Lightweight polymer allows easy loading and unloading
• Ten blocks provide flexibility for multiple uses or spares

Who this is for: Campers, trailer owners, and RVers who need a reliable, easy-to-use leveling solution for uneven campsites. Ideal for those who want larger footprint support than standard pads, need compatibility with various jack types, or prefer gear made in the USA. These blocks suit occasional weekend campers and full-time RVers who prioritize quick setup, increased load capacity, and durable construction.