Camco FasTen RV Leveling Blocks 10-Pack — 17 x 8.5 x 1.5" Interlocking Blocks with Twist-to-Lock Handle for Stable Jack and Wheel

Camco FasTen 4x2 RV leveling blocks are interlocking, heavy-duty polymer pads that stack to create a stable, customizable base for jacks and RV wheels at campsites.

When you need quick, dependable leveling and support on uneven ground, the Camco FasTen 10-pack gives you ten identical, interlocking blocks that combine for incremental height and a broad footprint. Built in the U.S.A. with a quad-grid load-bearing pattern and a twist-to-lock T-handle, these blocks are designed for repeatable performance with dually rigs, tongue and stabilizer jacks, hydraulic jacks, and fifth-wheel landing gear. They collapse and lock together for compact transport, and integrate with other Camco accessories for flexible campsite setups.

How much height and support do these blocks provide?

The individual Camco FasTen block measures 17" x 8.5" x 1.5" and is engineered to stack for incremental elevation. Stacking lets you build a stable platform under tires or jack pads while keeping lateral stability from the wide footprint.

• Single block thickness: 1.5 inches
• Maximum recommended safe stack height: 4.5 inches
• Footprint supports dually rear wheels and common jack pads
• Quad-grid structure disperses load across the surface

Will these work with my RV’s jacks and dual wheels?

Yes — FasTen blocks are compatible with dually (dual-rear-wheel) setups and a wide variety of jacks, including hydraulic, tongue, stabilizer, and fifth wheel jacks. The broad dimensions and interlocking design give a stable base for both wheel leveling and jack support on softer or uneven terrain.

• Compatible with hydraulic and manual jack pads
• Designed to accept dual-rear-wheel contact areas
• Integrates with Camco leveling and stabilizer accessories
• Do not exceed the 4.5" stack guideline for safety

How do the interlock and T-handle features make setup easier?

The interlocking pattern keeps stacked blocks aligned under load so they won’t shift while you position the RV or crank down a jack. The built-in T-handle lifts for carrying and twists down to lock blocks together for storage, making transport and stowing more convenient than loose loose pads.

• Interlock geometry prevents lateral shifting
• T-handle lifts for carrying and twists into the base to lock
• Collapsed handle reduces storage footprint in compartments
• Ten uniform blocks simplify mixing and stacking as needed

How does this set fit into a larger campsite leveling system?

These FasTen blocks are designed to work alongside Camco leveling accessories for a tailored approach: mix blocks with other sizes or pair with stabilizer jack pads and tongue jack stands for comprehensive support. The standardized sizing and load-bearing design make them a versatile building block of a complete leveling kit.

• Works with Camco part numbers: 21022, 44505, 44501, 44565, 44636
• Mix-and-match stacking supports customized heights and bases
• Durable polymer construction resists cracking and deformation
• Made in the USA and covered by Camco’s product support

Who is this for? Campers, RV owners, and tow vehicle operators who regularly encounter uneven campsites, gravel pads, or dirt lots will find these Camco FasTen leveling blocks especially useful. They suit owners of dually and single-rear-wheel rigs, anyone who uses stabilizer or tongue jacks, and people who want a compact, interlocking set that’s easy to carry and store. If you need reliable, repeatable support that integrates with other Camco accessories and reduces setup time, this 10-pack provides a practical, American-made solution.