Pilot Super Grip retractable ballpoint pen with 0.7mm tip, 0.3mm line width and black ink : Amazon.co.uk: Everything Else
Ballpoint Pens, CHAOQ 3 Pcs Stainless Steel Retractable Silver Metal Pen for Business Office Christmas, 1.0mm Medium Point Black Ink, with 6 Extra Refills : Amazon.co.uk: Stationery & Office Supplies