1.Heavy Duty Paving Chairs 2.Maximum load: 800 lb 3.Calibre de acero: varilla de hasta 1 1/2'' Floor, roads, highways and all type of concrete slabs.Spacer with maximum load, stable and maximum aggregate flow, optional with base.Maximum load: 800lbCalibre de acero: varilla de hasta 1 1/2" CodeConcreteCover (inch)PackingQuantity(pieces)WeightPer Piece(ounce)WeightPer Packing(pounds) ...