Dura-Block AF4420 Hook & Loop Black Standard Sanding Block Conforms to work surface Follows curves or flat surfaces Used worldwide, wherever professional body work is done This block is designed to follow slightly curved or flat panels without digging into the fill material Hook and Loop attachment for Hook and Loop type paper allows paper to be removed and reused, saving time, money and paper; 3/4" height x 1.375" width x 11" length