... :10~4000diameter 3.Standard:ISO,ASTM,JIS,DIN,BS Stainless Worm Gear ISO9001:2000 system certifiedStandard: ISO, ASTM JIS, DIN, BS ... , Cast metal part, Copper fitting, Copper nut, Bushing, Gear, Worm and Worm Wheel,Copper bushing and all non-ferrous metal alloy parts ... : Nonwoven fabrics or bubble film+carton.each four packs packed in one oil paper, then packed into carton.