Polished. Cast stainless steel. No. T7630406: Overall Length: 2-3/8in, Opening Size: 1/4in, Material: Stainless Steel, Finish: Polished, Working Load: 160 lb No. T7630416: Overall Length: 3-1/8in, Opening Size: 5/16in, Material: Stainless Steel, Finish: Polished, Working Load: 200 lb No. T7630426: Overall Length: 3-1/2in, Opening Size: 3/8in, Material: Stainless Steel, Finish: Polished, Working Load: 260 lb No. T7630436: Overall Length: 3-7/8in, Opening Size: 7/16in, Material: Stainless Steel, Finish: Polished, Working Load: 320 lb No. T7630446: Overall Length: 4-1/2in, Opening Size: 1/2in, Material: Stainless Steel, Finish: Polished, Working Load: 450 lb