This inground pitching rubber is designed for permanent setup. All-steel ground anchor can be cemented in and plugs are included. Official sized at 6 inches by 24 inches and is a heavy-duty choice for any field. Bolted and silicone sealed for added durability. * This super heavy duty unit is made with all steel ground anchor to be cemented into ground. Pitcher"s rubber is bolted and silicone-sealed to the top stanchion. Comes with two rubber anchor plugs. Official size: 6 in. x 24 in.. Weight: 21 lbs.