SCCA recommends attaching a "Remove Before Flight" streamer to your fire bottle safety pin as a reminder to arm the system. This 7 3/4" x 7/8" RBF flag also makes the fire bottle pin easier to find between sessions.
Use it to mark any item that needs to be removed before racing: carburetor covers, steering rack stops, suspension blocks, and more. Makes a unique keyring, too. Bright red with white lettering.