Hot Racing RCG810L Long Steel 48p 10t Pinion Gear Made by Hot Racing; Hot Racing is a United States based company; parts are sourced from Chinese producers All Hot Racing upgrade parts are direct replacements for stock components; additional parts are not required Hot Racing part number RCG810L; UPC 083745359275 This item works with: Axial SCX-10 Scale Truck; HPI Electric Wheely King 1/12; Losi 1:10 Night Crawler