magnetoSleeves pen holder, magnetic, pack of 4, 1+ packs. Supplied = assembled. Width = 110 mm. Colour = black. Product type = accessories for whiteboards. Make every marker magnetic, for all commercially available markers 15 - 18 mm. Markers are always at hand at the whiteboard or flip-chart. Never search for markers again. The integrated magnets in the magnetoSleeves ensure all commercially available markers adhere to ferrous surfaces and remain within easy reach. Simply pull magnetoSleeves over the marker, and the marker can be attached to a whiteboard or flip-chart made of sheet steel. Pack of 4.