Hot Racing Blue 17mm lock nut (4) RSLF117X06 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 RSLF117X06; UPC 083745383355 This item works with: Traxxas Slash 4x4 all versions, Stampede 4x4 VXL