Platinum Fountain Pen Ballpoint Pen Refill Black Ink BSP-100S#1 Box of 10 2200 ● Ball diameter: 0.7mm ● Total length: 67mm ● Ink color: Oil-based Black Red ● Tip: Stainless steel Main applicable products of Platinum: [Specifications] ・Multi-color refill (X-7 type) 67mm [Compatible products] [Specifications] ・Multi-color refill (X-7 type) 67mm [Compatible products] ・Pocket / Platinum Pocket / Stylus Pen / DOUBLE 2 ACTION (1500・2000 mini) / DOUBLE 3 ACTION (1000C・2000・2000C・2500A・2500N・3000・3000A・5000・5000E・1000 mini・1500A mini・LEATHER・Binder Clip / Modern Maki-e Karusa Multi-function Writing Instrument / Mother-of-Pearl Inlay) / DOUBLE ACTION R3 (1000RA・1500・1500RA・2000・2500R・3000RM・3000RW・4000M・5000) / DOUBLE 4 ACTION / DOUBLE ACTION 30th Anniversary Model / DOUBLE ACTION Sterling Silver / DOUBLE 3 ACTION Leather Wrap / DOUBLE 3 ACTION Leather Wrap Premium Package / DOUBLE 4 ACTION / Pure Gold "Higo Zogan" / Basket Pattern Genuine Leather Wrap / DOUBLE ACTION R3 5000CW / Riviere