Our most versatile tip technology is proprietary to Cross, and is known as Selectip Rolling Ball. A Selectip allows you to "select" the kind of refill you want to use in this writing instrument from the following options: All Cross products are shipped in boutique-quality gift packaging that you'll be proud to give as a gift. Cross offers a range of ball-point refill sizes and colours; Selectip gel rolling balls, porous-points (felt tips), ball-points and document markers; 0.5mm pencil leads; specially formulated cartridges and bottled inks. Cross has re-invented writing instruments with jewelry-quality craftsmanship. We were America's first manufacturer of quality writing instruments, and that means that we've been making pens people use, depend on and enjoy for a long time. All Cross writing instruments are unquestionably guaranteed against mechanical failure, regardless of age. Includes 1 Black Gel Ink Rolling Ball Refill (8523) in pen All Cross products are shipped in boutique-quality gift packaging that you'll be proud to give as a gift. Cross offers a range of ball-point refill sizes and colours; Selectip gel rolling balls, porous-poin