Flexovit Hook & Loop Sanding Discs are made from tough and sharp high performance aluminium oxide combined with a heavy paper backing makes this product extremely durable and long lasting. They have 8 perforated holes to fit sanders with 8 dust extraction holes. These tough and durable sanding discs, with heavy paper backing for longer life, are ideal for general purpose sanding and stock removal. Hook & loop backing allows quick and easy disc changing to fit most brands of eccentric sanders. Suitable for use on wood, paint and metal. Specifications: Size: 150mm, 8 holes