Schneider Slider 755 XB Ballpoint Refill, 1.4mm, Red Ink, Box of 10 (175502) Compatible with the Schneider Rave, Haptify, Pulse Pro, Epsilon, and Epsilon Touch; universal Parker style refill fits many other brands Viscoglide ink technology for easy, gliding writing; red ink 1.4mm Xtra bold writing line features waterproof red ink, according to ink standard ISO 12757-2 Durable stainless steel metal tip; extra large ink capacity writes for almost three miles Ink will not smear and dries quickly; box of 10