Mold No.=0.5 ; No. of Teeth=1 ; Outer Diameter=6.0mm ; Width=9.5mm ; Bored Hole Diameter=1.9mm 

Worm Gear which is made of POM in original colour. It is a transmission mechanical parts both in toys and Household Electric Appliance. t can be a parts in Toys such as Robot, Toys car, Train / Railway, educational & experimental model, Science Kits, or Build-it-yourself Kit Model, etc