Robotic & Radio Control Toys
eudaikonrich CNC Aluminum Gearbox OD-3 Overdrive Transmission Lightweight for 1/10 RC Crawler for LCG Chassis for SCX10 III Pro Capra Upgrade Parts(Purple)
Gear ratio: 3.66:1 Output shaft: 4.9mm Bottom plate width: 72mm Bottom plate thickness: 9mm Color: Black/Red/Purple, Manufacturer: eudaikonrich
https://www.bizrate.co.uk/robotic_radiocontroltoys/eudaikonrich-cnc-aluminum-gearbox-od-3-oid37749293764.html