Pilot Ballpoint Pen Refill 0.7mm BRFS 10 pieces. * Compatible with any thickness of BRFS series pens. (Example) A 0.5mm refill can be used in a 0.7mm pen. Specifications * Ink: Low-viscosity oil-based ink (Acro Ink) * Part Numbers: BRFS-10EF (0.5mm), BRFS-10F (0.7mm) [Compatible Pens] * Multi-function pens 2+1 Evolt, Legno, Ridge, SR, Miyabi Emaki, Acro Drive, Slim, Custom Heritage 4+1, Acroball 2+1, 3+1, etc. * Multi-function pens 4+1, 3+1 4+1 Custom Heritage, 4+1 Ridge, 2+1 Ridge, etc. * Multi-color pens (4 colors, 3 colors, 2 colors) Legno Maple, 3-color ballpoint pen Ridge, Rotating 2-color, etc. [Compatibility] Because these are 4C-type refills, they can also be used in the following models from other companies that use the same refills: Mitsubishi Pencil: SE-7, Tombow: BR-VS, Pentel: KFS7, KFS6, Platinum: BSP100S, Sailor: 18-0103, etc. * Refill Sizes: 0.5mm, 0.7mm * Colors: Black, Red, Blue, Green *Green is only available in 0.7mm * Size: Total length: 67mm, Maximum diameter: 2.3mm