Color mm Stock NO Code BLACK 0.28mm UMR82.24 142790 0.38mm UMR83.24 720912 0.5mm UMR85N.24 693629 RED 0.28mm UMR82.15 142783 0.38mm UMR83.15 720905 0.5mm UMR85N.15 693612 BLUE 0.28mm UMR82.33 142806 0.38mm UMR83.33 720929 0.5mm UMR85N.33 693636 BlueBlack 0.38mm UMR83.64 720936 0.5mm UMR85N.64 693643