Listing is for one (1) Sanding Plate Attachment by Pearl Sanding Company. The plate attachment is 16 inches in diameter and made of heavy duty aluminum. Includes the 3/8 inch thick felt pad. Has a durable metal center casting clutch plate and fits most 17-18 inch floor buffer machines. He Pearl Sanding Company plate attachment is in very good condition. The thick fat pad shows some wear shown in the photos attached. Please see all the photos as they best show the condition of the pad and plate attachment.