Steve Trewick M7STZ on Twitter: "Oh, a word about pens. I use Stabilo s'move basketball. Good grip, easy to see (orange), very quick drying #VIHacks http://t.co/D8t7zdwRd9" / Twitter
Stabilo Easy Start Easy - Original Ergonomic Rollerball Pen - R and L Handed | eBay
Pen stabilo basketball pen marker pen 1870 blue black
Apple Pencil Skin - Basketball by Sports | DecalGirl
Pen Stabilo Basketball Pen Marker Pen 1870 Blue Black - Gel Pens - AliExpress