Schneider K15 retractable ballpen with a slim design, featuring a metal push-button retract and a metal pocket clip. This pen is refillable with Schneider 775 refills. Please note that this pen no longer fits the Schneider 75; to fit this refill, please choose the Schneider K1. It is supplied with black ink. The barrel color and writing color are black. It has a replaceable medium (M) refill that is waterproof according to ink standard ISO 12757-2. Compatible replacement refills include Office 765 and Express 775.