Profile: Davall Stock Gears specializes in offering custom-made gears and gearbox systems. We specialize in developing, manufacturing, assembling & testing a wide range of geared drives and precision gears. The Spiradrive® (spiroid) is a right angled/offset drive, consisting of a gear and pinion. The pinion has fewer teeth than the gear and is of parallel or tapered screw form. The gear is a face type similar to a hypoid-offset spiral bevel. It is available in a standard range of gearboxes (motorised and overload protected), loose gear sets, or customised designed and manufactured to specification.