Zinfandel 4The Zinfandel 4 is a beautiful rollerball pen featuring a full body in mokume gane (the ancient forging technique once used to decorate the hilts of Samurai swords), titanium, and ebonite. The pocket clip is set with diamond. This beautiful writing instrument also features William Henry's patent pending Wavelock cap closure system a ring of chromium steel balls embedded in a titanium ring which are captured in wave shaped grooves in titanium collars