Check the listing for details. Acetal Black Copolymer Rod, Various Diameters, 12" Long - Delrin - LOWEST PRICE!. Color: Black, Condition: New. Listed at 10.95 USD. Black Copolymer Acetal Rod Stock - 12 inches long Dimensions listed in inches Saw cut to length, tolerance: +/-1/8" POM-C is a porosity free copolymer acetal material. This material exhibits good chemical resistance, high strength, rigidity and hardness as well good sliding and wear properties. Acetal is commonly referred to as Delrin; however, Delrin is a homopolymer Acetal. Main Features -porosity free -good wear properties -low water absorption -good chemical resistance -easy to machine -high dimensional stability *Stock Photo, actual item not pictured*Black Copolymer Acetal Rod Stock - 12 inches long Dimensions listed in inches Saw cut to length, tolerance: +/-1/8" POM-C is a porosity free copolymer acetal material. This material exhibits good chemical resistance, high strength, rigidity and hardness as well good sliding and wear properties. Acetal is commonly referred to as Delrin; however, Delrin is a homopolymer Acetal. Main Features -porosity free -good wear properties -low water absorption -good chemical resistance -easy to machine -high dimensional stability *Stock Photo, actual item not pictured*