BLH20 Single Shaft Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox BLHT20 Single Shaft Input - Double Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox BLH20 Single Shaft Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox BLHT20 Single Shaft Input - Double Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox BLHI20 Bore Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox BLHO20 Single Shaft Input - Bore Output 1:1 & 2:1 Spiral Bevel Gearbox BLHB20 Bore Input - Bore Output 1:1 & 2:1 Spiral Bevel Gearbox BLHM20 Single Shaft Input - Counter-Rotating Output Shafts 1:1 & 2:1 Spiral Bevel Gearbox