Key features14 piece progressor holesaw set11 holesaws 1 power change adapter 2 hss g pilot drill bits190 220 250 290 350 380 440 510 570 640 760specifications19 22 25 29 35 38 44 51 57 64 76 mm technical specifications diameter mm 19 diameter mm 22 diameter mm 25 diameter mm 29 diameter mm 35 diameter mm 38 diameter mm 44 diameter mm 51 diameter mm 57 diameter mm 64 diameter mm 76