Provides a smooth cut, with minimal tendency to bite or snag on contact with irregular surfaces. Constructed of hardened steel and abrasion resisting high speed steel teeth with a tough alloy body and cap. 5-1/2 teeth per inch/25mm make this Saw ideal for thinner gauge material. Cutting depth of 41 mm (1.5/8”).
I've used Starrett hole saws at the factory to cut 4130 steel, .035" wall pipe and they do an excellent job cut after cut. The cuts are accurate (saws aren't perfect circles, but they cut the correct diameter) and so far they've survived dozens of cuts.