BLH50 Single Shaft Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox                  BLHT50 Single Shaft Input - Double Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox                      

BLHI50 Bore Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox                             BLHO50 Single Shaft Input - Bore Output 1:1 & 2:1 Spiral Bevel Gearbox 

BLHB50 Bore Input - Bore Output 1:1 & 2:1 Spiral Bevel Gearbox                                        BLHM50 Single Shaft Input - Counter-Rotating Output Shafts 1:1 & 2:1 Spiral Bevel Gearbox