UA® Sanding Sheet, Premium, Series: 4S, 11 in Length, 9 in Width, 150 Grit, Stearate Aluminum Oxide Abrasive, Paper Backing, Open Coat, Applicable Materials: Wood and Metal, C-Weight Backing Weight UA® 84286 4S Premium Sanding Sheet, 11 in L x 9 in W, 150 Grit, Stearate Aluminum Oxide Abrasive, Paper Backing