Sigmund Freud inspirational quote, engraved with his famous quote, Out of your vulnerabilities will come your strength. Twist style cap is engraved with Sigmund Freud's signature.. Twist-style pen cap is engraved with Sigmund Freud's signature. Weight of pen approximately 30 grams Pen size 5.5 inches long. Ballpoint writing tip with black ink This pen is compatible with the common standard G2 size ink refills, also known as Parker-type ink cartridges. Refillable and reusable, this pen provides a practical alternative to using disposable ballpoint pens.. This luxury fine writing instrument makes a suitable psychology gift for psychologists and psychology majors, counselors and therapists..