Hot Racing SCX38TP03 2 Speed Gear Box with Steel Gear Short Shaft Output 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 SCX38TP03; UPC 083745962666 This item works with: Axial AX-10 Deadbolt, AX-10 Ridgecrest Crawler, SCX-10 Scale Truck, Wraith 4WD Rock Racer RTR