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FasTen blocks stack in a quad-grid pattern so each added block gives you a full extra inch of height, letting you dial in a level campsite without guessing. They're rated for use under single wheels, dual wheels, hydraulic jacks, tongue jacks, stabilizer jacks, fifth-wheel jacks, and tandem axles.
The integrated T-handle pulls up for carrying the full stack of 10 blocks at once, then twists down to lock everything together for storage - no separate bag or strap needed. Camco recommends keeping your stack height at 4-1/2" or less for stability.
A straightforward way to level a trailer or motorhome on uneven ground without carrying loose boards or bricks.
