1 inch DA pads with PSA face DA pads for pneumatic sander Max RPM: 20000 Size: 1" - 1.5" 1", 1.5" DA pads with PSA faceFor working with Random Orbit Sander1/4'-20 internal thread.Ideal for spot sanding, dent paint repair, glass repair.Art.No. Spec. 1441011 1"(25mm), PSA , 1/4"-201441211 1.5"(29mm), PSA, 1/4"-20 1 inch DA pads with PSA face