... tube, the main material is POM, with excellent self lubrication nature ... nature of Pom(Polyacetal ) TubePOM The unique place is its toughness and hardness close to metal, high ... temperature wear resistance is also relatively good, do gear and wear ... 100M1012100TU1412-100M1214100This tube is called pom tube, the main material for the tube is pom, it is a special plastic ...