Klingspor SFK 655 Flexible Abrasives have been designed by Klingspor with the Do-it-yourself enthusiast in mind with a handy, convenient smaller package containing one block compared to conventional larger abrasive packs. It is suitable for hand application on a number of surfaces. Klingspor’s premium-quality products satisfy even the toughest standards in terms of surface finish, service life and performance. It can be used on many materials and the cleaning performance is significantly increased by use of additives. It has a soft abrasion due to elastic structure and can be used until completely worn down.