Flexovit Hook & Loop Sanding Block Kit contains an assortment of aluminium oxide sheets and a sanding block. These blocks are very comfortable to use and feature a hook & loop backing system to allow for quick and easy sheet changing. Contains: 1 Sanding Block and 3 Sheets 70 x 125mm.Grade: 1 x Coarse 50G, 1 x Medium 80G and 1 x Fine 120G. Ref: UTTK13691