Machined Spiral Cut Ring Gear/Diff/Pinion GearDetails: Spiral cut differential ring and pinion gear sets are CNC machined from a solid block of steel. The teeth are cut with a slight curve to minimize backlash between gears and maximize tooth traction with more surface area than straight cut gears. Spiral cut gears are ideal for high torque, high speed, brushless applications. Features: Spiral Cut Gears CNC Machined Steel High Torque, & High Speed Intended for Brushless Applications