These are upgrade parts compatible with ARRMA 1/7 Felony 6S BLX, Infraction 6S BLX, and Limitless Roller. They serve as a direct replacement for Parts # ARA320519, specifically the rear wing mount. The mount is made from CNC machined PTFE-coated hardened alloy 6061-T6, offering a hard-anodized finish. This alloy material is both lightweight and durable, significantly improving the overall performance of the rear wing mount on your ARRMA 1/7 Felony, Infraction, or Limitless Roller. If you are not 100% satisfied with our products, please do not hesitate to contact us!