Toleblocks are specially designed for the TOLECUT Touch-Up sanding sheets (not included) These extremely rigid and durable blocks provide an excellent backing for removing nibs & runs USAGE: Use Toleblock S for tight spots and spot repairs 8-CUT SHEETS: Use with TOLECUT 8-Cut Sheets. Toleblock S will NOT fit Full or 4-Cut Sheets. MADE IN JAPAN: Manufactured by Kovax, leaders in coated abrasive technology for over 90 years in the automotive, metalworking, and woodworking industries