All of the writing implements in my rOtring collection. Links below.

rOtring 500 .5mm - http://amzn.to/2we5nBD
rOtring 600 2mm (Silver) - http://amzn.to/2w7a957
rOtring 800 .5mm - http://amzn.to/2gffbr5
rOtring Rapid Pro 2mm (Black) - http://amzn.to/2we4OaI
rOtring Rapid Pro 2mm (Silver) - http://amzn.to/2wHifmR
rOtring Rapid Pro Ballpoint Pen - http://amzn.to/2gf53OV
Parker Ballpoint Refill (Black) - http://amzn.to/2wHtkUI