This is the Clutch Gear Hub for the Savage Three-Speed Tranny from HPI. 86362
FEATURES: Aluminum construction Center, One-Way Bearing
INCLUDES: One Clutch Gear Hub assembled with One-Way Bearing Three 3x4mm Flat-head machine screws
REQUIRES: Savage with Three-speed Tranny
SPECS: Outside Diameter: 1.36" (35mm) Inside Diameter: .32" (8mm) Outer Rim Thickness: .16" (4mm) Thickness at One-Way Bearing: .51" (13mm)_