1. For different ratio, there are one input shaft, two input shafts, unilateral output shaft and double side output shaft.

2. Spiral bevel gear can rotate in both directions and transmit smoothly, low noise, light vibration, high performance

3. Given ratio is not 1: 1, if input speed on single-extendable shaft, output speed will be reduced; If input speed on double-extendable shaft, output speed will be reduced.