The SSD SCX10 II AR44 6-Bolt Ring Gear Set is an optional CNC machined, hardened steel upgrade for AR44 style axles. This gear replicates the stock gear ratio and features a heavy duty 6-bolt mount that increases strength and works with the SSD 6-bolt locker. Features: CNC Machined Hardened steel 6-Bolt assembly for improved strength 8T/30T ratio same as stock SCX10 II Fits SSD 6 bolt axle locker Direct fit in Axial AR44 SCX10 II or SSD Pro44/Pro Diamond axle Includes: 30T Ring gear 8T pinion gear shaft 0.5mm shim