These high quality bases are designed for years of care free use in any climate, They will not rust, dent or leak and are made in the U, S, A, U, V, stabilized polymer resists cracking and fading, Accommodates 1"" and 1-1/2"" poles, Caps remove easily for filling with water, cement or sand, Self storing twist lock stem, Dimensions:, Item Length: 16, Item Height: 6, Item Width: 16 SKU: SMCPLS001