Ultra-Fab Products 48-979052 Ultra Leveling Block<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Interlocking blocks are stackable in a number of configurations </span></li><li><span class="a-list-item"> Stack in different ways to achieve a perfect leveling of your RV </span></li><li><span class="a-list-item"> Blocks measure 8.3125" x 8.3125" with a 30，000 lb. weight capacity </span></li><li><span class="a-list-item"> Comes with a handy carrying/storage bag </span></li><li><span class="a-list-item"> Manufactures 3-Year Warranty </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41WArd5uq%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51eSkSl3jzL.jpg" noproxy>