Flexovit hook amp loop sanding discs flexovit 63642526394 these eccentric sanding discs from flexovit are made from tough and sharp high performance aluminium oxide combined with a heavy paper backing which makes them extremely durable and long lasting they have 8 perforated holes to fit sanders with 8 dust extraction holes flexovit 63642526394 hook amp loop sanding discs 150mm coarse 50g pack of 6