Valterra's A10-0900 Trailer Tongue Jack Stand supports the trailer tongue without the worry of sinking into the asphalt on hot days, eliminating the need to tote and store bulky wood blocks. The stand holds up to 10,000 lbs., yet only weighs 2 lbs. Not designed to be used with trailer jacks with wheels or casters. Dimensions: 8-5/8" diameter x 8-3/8" height.