Tekno RC Steering Blocks M6 Driveshafts Left/Right Slash 4x4 TKR6837 Made by Tekno RC; Tekno RC is a United States based company; parts are sourced from Taiwanese producers Tekno RC part number 6837; UPC 815076010163 This item works with: Traxxas Slash 4x4 all versions, Stampede 4x4 VXL