... certification:ISO9001:2008 Small Plastic Worm and Worm GearsWe can produce gears, worms,worm gears ,gear boxes, worm, worm ... in a variety of applications including home use, industrial use and so on;7). Packaging: Inner packing--Polythene bags ... of gear types including:Spur Gears (internal and external) Helical Gears (single and double) Worm Gears Screw Gears wormssize:Any size available,according ...