Robotic & Radio Control Toys
Steel Spiral Diff Ring Gear 37T & Pinion Gear 13T Set, Front & Rear Differential Upgrade Parts for 1/10 Maxx RC Truck, Heavy Duty Metal Gears Replacement for Part #8977,#8978
Hardened Steel Construction – Crafted from chrome steel (HRC45–50) for superior strength, excellent wear resistance, and long-lasting durability under high-load RC conditions. Precision Spiral Gear Set – Includes two 37T spiral ring gears and two...
https://www.bizrate.co.uk/robotic_radiocontroltoys/steel-spiral-diff-ring-gear-oid40270854070.html