●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: Toleblock QS specially designed for multiple curvatures in one block ●8-CUT or 4-CUT SHEETS: Use with TOLECUT 8-Cut or 4-Cut Sheets. Toleblock QS will NOT fit Full Sheets. ●MADE IN JAPAN: Manufactured by Kovax, leaders in coated abrasive technology for over 90 years in the automotive, metalworking, and woodworking industries