These are Body Klip Retainers from Dubro. These work with any electric or nitro vehicles. FEATURES: Yellow rubber retainer Steel body clips INCLUDES: Two yellow retainers Eight body clips Instructions REQUIRES: Nothing COMMENTS: The body clips are attached to the yellow strap. The yellow strap mounts to the the hood of the vehicle. This is so when you remove the body clips you won't lose the clips when removed from body.