Gen3 Unit 45T Black Steel Spur: 1/16 Revo, Summit Made by Robinson Racing; Robinson Racing is a United States based company; parts are sourced from American producers Robinson Racing part number 7745; UPC 719696077455 This item works with: Traxxas 1/16 E-Revo VXL, 1/16 Slash/Rally 4WD, 1/16 Summit VXL