Staedtler 3179CDBK Fiber Tip Pens, for CD/DVD, Permanent, Medium Point, Black, STD3179CDBK, STD 3179CDBK, CD-R marker pen features an extra-soft tip that does not damage sensitive CD/DVD surfaces. Ink does not penetrate the data storage layer. Dry-Safe pen can be left uncapped for days without drying up. Writing is still clearly legible years later. Lumocolor ink offers excellent smudgeproof and waterproof qualities on almost all surfaces. Permanent, lightfast ink dries in seconds. Ideal for left-handed users. Locked tip system prevents tip from being pushed back into the barrel under heavy writing pressure. Pen has a polypropylene barrel and cap with a clip. UPC Code 031901923976, Quantity 1 PK