Three model configurations of W.C. Branham Series 4 Right Angle Worm Gearboxes include: Hollow Bore, Single Shaft; Hollow Bores Only; and Hollow Bore, Double Shafts - all in 10:1 and 20:1 ratios. Select models with .625 inch diameter shaft x either .625, .750, 1.00 inch diameter hollow bores. Each model is designed around a 1.333 inch center distance.

All models are constructed with double sealed, heavy duty ball bearings and case hardened worm gears.