This is a direct replacement for the Air-O-Guard Bumper System that comes on all current Prokennex Paddles. It includes the bumper system and six pins. A small tool can be used to initially get under and pop out the pins in your paddle, and a pair of pliers can be used to finish the job! When adding on your new guard, please put on the Air-O-Guard first then insert the pins. **THIS GUARD FITS BOTH PRO AND OVATION SHAPES**