Also the P-butter wrenches have a thin sharp-edged handle (also short in length) all of which add to auto-torque-limiting! If you try to tighten past a certain torque-point they do more than "leave a mark" in your palm. All that aside there's times I don't have the right P-B wrench at hand so used a socket on either a ratchet or some other handle, and I don't know if I ever stopped to get a torque wrench out (even tho I own several of various sizes)..YMMV but I have never split a square taper crank arm or ruined the taper-hole....yet...and I ofttimes have LIGHTLY greased the taper flats, as often as done it "dry"
