Bic Velleda 1751 whiteboard marker pen uses drywipe low odour alcohol based ink Cap security lock Ideal for meetings and classrooms Large plastic barrel Chisel Tip This is Bic's 1751 range. Bic print 1754 on the assorted box of 4 denoting a shortened range code with the 4 representing the assorted pack Line Width 3.7 - 5.5mm Black, Blue, Green and Red Packed 4