This superfine sander with linear sanding motion (versus rotary or orbital) operates at 8,000 strokes per minute with a 3/32" (2.5mm) stroke. It is ideal for surfaces, slots and tight corners. Included are four sanding attachments with straight shanks and 4 with angled shanks (four different shapes per shank style) as well as 3 sheets of pre-profiled adhesive sanding pads. The sheets are 180, 240 and 400 grit with 5 of each shape per sheet.