Lasts up to 2x longer than a standard hss m3 hole saw when you cut sheet metal you want a hole saw that is tough enough to cope with hard steel and still able to make neat and efficient cuts for pipes'. '.strtoupper('t')he pro sheet metal ticks all these boxes and is a firm favourite with professional metalworkers'. '.strtoupper('w')e made the pro sheet metal hole saw for professionals who need to cut metal'. '.strtoupper('i')ts teeth are made from hss with 8% cobalt, which makes them sharp and durable'. '.strtoupper('i')t has a hardwearing body and a handy ejection spring helping you remove material plugs with ease'. '.strtoupper('f')or use with the bosch power change plus keyless arbor offering accuracy and robustness tested in bosch labs according to bosch standard procedures'. '.strtoupper('f')eatures and benefits bull lasts up to 2x longer than a standard hss m3 hole saw bull for use with the bosch power change plus keyless arbor offering accuracy and robustness bull for cutting holes in sheet metal, eg automotive steel, steel cladding, stainless steel sheets bull highly efficient for metalworkers and coachbuilders long life specifications diameter mm 79 working length mm 20