Introducing Canon's Extender Cap RF, the perfect accessory for your 1.4x or 2x RF Extender. Don't take the chance of your essentials getting dirty or damaged when not in use; this replacement Extender Cap RF was made with convenience and protection in mind. With its quick and easy bayonet-style mounting system, you'll never have to worry about ruining your lens or your shot. Now you can keep your equipment safe and secure in between shoots, and with its sleek design, you'll always have a professional and stylish look to your setup. Make life a little easier—invest in Canon's Extender Cap RF today!