This trailer accessory has number of uses. In fact, you might just find that this block provides so much utility, you'll have no use for any other blocks at all. U.S.A. Includes qty. 1, Length in. 9 3/4, Working Width in. 9 3/4, Height in. 1.5. 3/8in. dia. braided rope handle Keyed slot accepts a standard awning rod A raised top ridge and recessed bottom groove allow the blocks to nest together Solid top and bottom no-open webs to sink into ground or asphalt 2in. dia. x 1.5in. deep recessed center for straight and wheeled tongue jacks 45 bevel