Gel pen for office , 0.5mm or any sizes ,OEM serce . 12 peices per box . We can supply OEM serve for any pen , all kinds of specifications to be chose . Packing : 12 pieces / box ,12 boxes * 12 / carton = 1728 pieces . Sixes :0.5mm/Black Plastic Offer OEM/For office ,advertisement,commemorate,wedding celebration,welfare,gift ....No.:JZ-334/Brand :WonFa pen / Gel pen for office