• Set include one 0.5 modulus 5MM Hole Dia brass worm gear shaft and one 20 teeth brass worm gear wheel.
  • The transmission structure of worm shaft is simple, compact, small volume and light weight.
  • Worm Shaft Z1=1, turn a round of worm gear teeth, can get a large transmission ratio, generally in the power transmission, the transmission ratio I=10-80, like big transmission ratio, if use with gear transmission, will need to take the multi-stage transmission.
  • High quality material selection, carefully processing create high quality product.
  • Made of brass, long time service.