Product Description: Name: Worm Gear Worm RodMaterial: 45# steelModule: 2M/2.5MNumber of teeth: 15/20/25/30/35/40/45/50/55/60/80TProcess hole:10mm-20mm(Different batches can result in numerous inner holes)Rotating velocity ratio: 1: 15/20/25/30/35/40/45/50/55/60/80 Surface treatment: No floor treatment, no quenching treatment,no screw holes.Features: 1. The turbo malicious program has a compact structure, small size, mild weight, compatible for situations where two shafts intersect, the rotation ratio is high, the transmission energy isn't always high, or intermittent work is required.2. Smooth rotation, single headed worm, self-locking, computer virus can only pressure the turbine to rotate, and the turbine can not force the malicious program to rotate.3. Strong wear resistance, big selection of rotational velocity ratio, linear contact at the meshing teeth floor of the trojan horse gear, and excessive load-bearing capacity.Mainly relevant to: hardware/molds/mechanical transmission, etc. Note: Due to diverse batches of products, the overall dimensions could be changed, please talk to the real object! Remarks: If you have particular needs, please contact us, we will customise in keeping with your needs! Package Include: According on your Choose !