BLH40 Single Shaft Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox          BLHT40 Single Shaft Input - Double Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox 

BLHI40 Bore Input - Single Shaft Output 1:1 & 2:1 Spiral Bevel Gearbox                     BLHO40 Single Shaft Input - Bore Output 1:1 & 2:1 Spiral Bevel Gearbox 

BLHB40 Bore Input - Bore Output 1:1 & 2:1 Spiral Bevel Gearbox                                BLHM40 Single Shaft Input - Counter-Rotating Output Shafts 1:1 & 2:1 Spiral Bevel Gearbox