precision crown gear 1.material:POM,nylon,PA66,PP,PC . 2.Modulus: ... ,worm gears ,gear boxes, worm, worm wheel.Briefly description:Type:crown gearcolour: pom white colourcertification:ISO9001:2008moq:5000pcspacking : with polybag in ... ). Material: Variouse plastic material including ABS, AS, PPS, PP, POM, EVA, PC, PA, PMMA, PS, TPE, TPU, TPR and other injected ...