Get your rig level fast. The Camco FasTen system uses interlocking blocks that click together and carry as one compact stack -- no loose pieces sliding around in your storage bay. Whether you are driving single or dual rear wheels, running tandem axles, or dropping hydraulic jacks, these blocks give you a stable, repeatable platform every time you park.
Anyone who has wrestled with loose wooden boards or a bag of slippery plastic blocks in the dark knows how quickly setup becomes a chore. Camco designed the FasTen system to solve exactly that. The interlocking top surface clicks each block securely to the next, so your stack stays together while you position it and locks flat for compact storage between trips.
The built-in locking T-handle is the standout convenience feature here. When you are done stacking, push the handle down flush -- it disappears into the profile of the stack and adds zero bulk. Pull it back up when you need to carry or reposition the stack, and it locks in place so you can move the whole pack with one hand. No bag, no separate carry tote required.
Each block clicks securely to the next. The stack stays together during positioning and does not scatter when you set it down on uneven ground.
Handle collapses flush with the full stack for storage and extends with a positive lock for one-handed carrying. No separate bag needed.
Works under single wheels, dual rear wheels, tandem axles, and hydraulic stabilizer jacks -- covering almost every parking and leveling scenario.
Bright yellow color is easy to spot in low light. UV-stabilized resin resists sun degradation so the blocks hold their strength season after season.
The most common use is the classic drive-up ramp: lay the stack on the ground with the open end facing your tire, then drive slowly forward until the tire rides up to the height you need. The interlocking surface grips the tire and keeps the stack from spreading. For a perfectly flat platform at the top, pair these with Camco 44500 Leveling Block Caps -- flat-top inserts designed to cap the FasTen blocks and give your tire or jack foot a smooth, flush landing surface.
These blocks are not just for wheels. Set them under hydraulic leveling jack feet or manual stabilizer pads to increase travel range and protect soft or uneven ground. The interlocking surface keeps individual blocks from shifting when the jack loads up.
Each block is 1 inch tall. With 10 blocks in the pack, the maximum theoretical stack is 10 inches -- but Camco rates the safe working stack height at no more than 4.5 inches (4 to 5 blocks) under any tire or load. Exceeding this limit creates tip and collapse risk. For larger level corrections, use a dedicated ramp wedge system alongside these blocks rather than stacking beyond the limit.
Do not stack more than 4 to 5 blocks under any single tire or jack foot. Exceeding 4.5 inches of stack height increases the risk of block collapse or tip-over, which can result in rig damage or personal injury. Always chock the opposite wheels before driving onto any leveling stack.
When the T-handle is collapsed, the full 10-block stack stores as a single self-contained unit roughly 8.5 x 8.5 x 10 inches tall. It fits easily in a basement compartment, saddle bag, or truck bed storage box. The bright yellow color makes it easy to find against a dark storage bay floor and easy to spot if a block gets kicked under the rig during setup.