... degree drive gearbox speed ratio 1:1 or 2:1,transmission efficiency up to 95%.cast iron or aluminum gearbox are ... available. NOSEN 90 degree drive gearbox RNV-Series,cubic shape of gearbox.Model: RNV-065,RNV ... right angles change transmission directionsConfigurations: spiral bevel gears,bearings,gearbox,input and output shaftsMaterials: 1.Spiral bevel gears: alloy ...