The actual device is much smaller than the dimensions given in the product description. I'm going by the dimensions of the box it comes in. The block itself is 17 inches long at the base, 6-1/4 inches wide, and 4 inches high. The footrest on top measures 3-3/4" x 4". The center hole is actually tapered, not straight. It measures 1-3/4" in diameter at the top and 1" at the bottom. Depth 3-1/2 inches. I planned to put a block between the wheels of my two-axle trailers, one trailer for horses and the other trailer for equipment. However, tire clearance is about 26 inches on both, measured between the front and rear wheels touching the ground. The block is too small to block both wheels at the same time. As a tongue support, the block is too low at 4 inches to make much of a difference when jacking up. The jack hole is too small for a standard 2" 2 axle trailer jack.
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