SODIAL(R) 20 Pcs Square Foam Replacement Sander Back Pad Sanding Mat Black Product Name : Sander Back Pad;Material : Foam Hole Distance : 6 x 4.5cm / 2.4" x 1.8"(L*W);Size (Each One) : 11 x 10 x 0.8cm / 4.3" x 3.9" x 0.3"(L*W*T) Color : Black Weight : 164g