Clog resistant; premium aluminum oxide mineral; use wet or dry. Sheets perforated for easy dispensing; works for interior and exterior surfaces. Number in package: 4. SKU: 42973947 MFG: 28320SB-UF4 Shop more products by 3M. We offer lowest price on Sanding Power Sheets. With Life and Home you always get the best deals SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI Free shipping over $35 Sold out $6.98 Quantity Sold Out Sold out Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 7" x 4.5" Grit: 320 Ultra flexible sanding sheets: fold, roll, shape or twist Lasts 15 times longer than 3M conventional sanding sheets Clog resistant; premium aluminum oxide mineral; use wet or dry Sheets perforated for easy dispensing; works for interior and exterior surfaces Number in package: 4 FEATURES MFR: 28320SB-UF4 SKU: 42973947 UPC: 051141401355 Brand: 3M