I have been digging around in my stores and rediscovered two raw and unused steel frame components, bottom bracket tubes, that I bought over 15 years ago during my last phase of bike building. They are 68mm long and 40mm outside diameter with a clock wise screw thread in one end and an anticlockwise screw thread in the other end. I know bike bits are sometimes timeless and other times changable and easily outdated so is what I have still standard fitment? Also am I remembering correctly that the anticlockwise thread is the left side? Thank you.