1, ISO9001:2008 CERTIFIED. 2, Different kinds of gears, worm gears,Module from M1-M8 3, Material:C45, 40Cr. 42CrMo. GG25,316L. 1, ISO9001:2008 CERTIFIED.2, Different kinds of gears, worm gears3, Standard and non-standard4, Material C45, 40Cr. 42CrMo. GG25,GGG40,GGG45, S.S 304, 316, 316L5, Module from M1-M86,Max. Out Diameter: 800mm7, Helix angle: 0 degree to 45 degree RH/LH.We can offer you all ...