500Y
The flex edges allow the backing plate to be more forgiving while buffing. This backing plate is great for 5" foam pads on all DA polishers.
The 350Y plates are replacement plates for the dual headed polisher and the 300Y is a unique and versatile plate with interchangeable adapters; one makes the plate a drill chuck backing plate and the other makes it a pneumatic backing plate.
The flex edges allow the backing plate to be more forgiving while buffing. This backing plate is great for 6" foam pads on all DA polishers.