This 8mm REX™ bore 2319 Series Miter Gear is designed to mesh with another 2319 Series Miter Gear while achieving positive drive on 8mm REX™ shafting.
A miter gear is a specific type of bevel gear. When meshed together, a pair of miter gears creates a 1:1 ratio and transmits power at a 90 degree angle due to the 45 degree pitch cone angle.