Black and a vibrant style where the product is awesome. Oil-based ink color blue core supekkuinku different weights bold tip shape corner 芯線 Width 8.5 mm Overall Length 142.3 mm shank diameter 23.2 mm Material Shaft: Aluminum Pen Refill: Acrylic fibres Weight 44.8 G Note: PX – 20 PX – 21 and has a different ink color..