Sandflex bonsai tool cleaning block MEDIUM

These unique rubber-bonded abrasive blocks are great for cleaning rust and grime off of any machined surface, making your tools look and feel like new. Used much like an eraser, they remove rust and corrosion in minutes without the need for chemicals or lubricants. Great for most all metal bonsai tools. MEDIUM has regular grit abrasives. Blocks are 2" x 3" x 3/4".