Daikin Pichon-kun Original ACROBALL 3+1 3-Color Oil-Based Ballpoint Pen & Mechanical Pencil Friction Ball 0.5 Knock Type DAIKIN's ACROBALL 3+1, featuring 3-color ink and 0.5mm and 0.7mm pen tips. - Brand: DAIKIN - Model Name: ACROBALL 3+1 - Color: Blue - Pen Tip Thickness: 0.5mm, 0.7mm - Features: 3-color ballpoint pen Mechanical pencil Not sold separately