COARSE SANDING: These delta sanding sheets have a P60 grit for coarse sanding and are perforated for dust extraction. VERSATILE: With a hook a loop attachment, they are 140mm x 140mm x 100mmin size and are ideal for sanding most types of wood and painted surfaces. USE WITH MOST DETAIL SANDERS: They are compatible with Amtech’s 180W 2-in-1 detail sander (stock code V6040) plus other brands. Compatible with Amtech V6005 180W detail sander &other brands.