Fast & easy trailer stabilization 4 Trailer Jack Blocks Built-in magnets instantly attach to the jack, so there is no need to double-check and adjust each jack block. Each Trailer Jack Block is rated to up to 6,000 lbs or 1,500 lbs when double-stacking 8 tall (14 when double-stacked), 12 diameter base, 10 diameter top 2- recessed post hole works great with post jacks Top of the jack block includes a 9-1/8 diameter recessed pad Weighs 5.3 lbs Chock your wheels: 4 Tuff Chocks Super thick 1/4 walls Extremely strong & sturdy Made to work with the curve of the Rapid Jack for extra jack support Keep 90% of the dirt outside your RV or Trailer: 1 Clean Step The perfect replacement for a worn out floor mat Unique ridges removes dirt and debris off your shoes and boots - Easy to wash

