Review on HSS Deepcut Holesaw - 1-3/8 Inch (38mm) by Andy Jolley

Starrett Deepcut and Fastcut bits hold very well and cut 4130 pipe precisely (harder cut for each bit). I ended up with a better fit than other brands. My only issues were the lack of rigidity in my clamp and spring/arbor, not with the saws themselves, but these starrets tolerated even that. There's a big difference between a drill chuck and a mill or lathe with arbors that go straight into the collet fit, but I've done a lot with the drill chuck. The saws I've used the most have survived dozens of cuts and still cut well. Pay attention to the cutting speed and feed, then they will last a long time. In addition, they are affordable.