Hot Racing SPN38SD06 Aluminum Adjustable 5mm Bearing Stinger Drive - Traxxas Spa 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 SPN38SD06; UPC 083745919486 This item works with: Traxxas Boat: Spartan