Hot Racing SECE562 Steel 0.5mod 62t Steel Gear 1/18 ECX 4wd 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 SECE562; UPC 083745864403 This item works with: ECX 1:18 Ruckus, 1:18 Smash Monster Truck, 1:18 Torment