Material: Brass
Color: Golden yellow
worm gearing velocity ratio: 1/30
Worm wheel size:
Teeth: 30
Hole diameter: 4mm/0.16"
Total diameter: 16.2mm/0.64"
lug bosses diameter 12mm/0.5"
lug bosses height: 7mm/0.3"
Gear shaft size:
Hole diameter: 5mm/0.2"
Total length: 20mm/0.8"
Weight: 20 g
Features:
1.Made of brass ensure long time service.
2.Including 30 Teetch 4mm Bore Worm wheel and 5mm Bore 20mm total length Gear Shaft
3.Modulus: 0.5 modulus
4.worm gearing velocity ratio: 1/30
5.The turbine worm drive structure is simple and compact, small in size and light in weight.

1 x worm wheel
1 x gear shaft
2 x screws