EZ Block from Andersen Hitches 

Stabilize your travel trailer and reduce stress on jacks with the EZ Block from Andersen Hitches.
The EZ Block is an extremely strong and durable jack block that is perfect for all bumper-tow trailers. These blocks work with scissor jacks, post jacks, pad jacks, and more. They feature a recessed post-hole that helps prevent post jacks from slipping.
The EZ Block under a LIFETIME warranty.
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