6" Adhesive Backed (stick on) Sanding Discs 6 Holes Porter Cable 150 Grit Fifty (15) Discs. You are buying one lot of Fifteen (15) Brand new, never used Porter Cable 6" Adhesive Backed Sanding Discs 6 Hole 150 Grit. Item#726601515. These are brand new still in retail packaging. Please contact us prior to purchase with any questions you might have on this item or another item in our store. Shipping discounts available for multiple purchases. International Buyers please contact us prior to buying we might be able to offer Flat rate shipping usps price on large orders.