... certification:ISO9001:2008 Small Plastic Worm and Worm GearsWe can produce gears, worms,worm gears ,gear boxes, worm, worm ... your gear needs, from various plastic gears,gearboxes ,worms ,worm gears,worm wheels,pinions to complete assembly services ... of gear types including:Spur Gears (internal and external) Helical Gears (single and double) Worm Gears Screw Gears wormssize:Any size available,according ...