Most fountain pens like the PILOT Falcon , Justus 95 , CUSTOM and CUSTOM Heritage range have threaded (twist) caps. When using a fountain pen for the first time, it is best practice to try unscrewing the cap first to prevent unnecessary damage. If you prefer a fountain pen with a friction-fit cap, that opens and closes with a satisfying 'snap!', we recommend the PILOT Kakuno , MR Range , Explorer , Cavalier and E95s .