Optional 58T Hardened Steel Spur Gear for the Losi Mini 8ight RTR FEATURES: CNC Hardened Steel Construction YOU WILL RECEIVE: One 48 pitch 58T Hardened Spur Gear REQUIREMENTS: Installation on the Mini 8ight Best use with hardened steel pinon gear. SPECIFICATIONS: pitch 48 Teeth: 58 diameter: 31.750 mm (1.25 inches ) COMMENTS: You will need CSG182R08 1/8 to 2mm Conversion Sleeve for most 48 pitch pinion gear on the market.