... pocket clip and easy carrying. A variety of options for USB pen drive: 1G, 2G, 4G,8G, ... introduction:Shenzhen Leyica stationery manufacturing CO.,LTD is a collection of research, design, production, sales for the integration of stationery. pen,Pencil, ball-point pen ... , roller pens, fountain pen, laser pen ,stylus pen, USB disk, etc , ...