Gel -ink pen,plastic pen 1)smooth writing 2)clear transparent barrel ... pen, ball pen,roller pen,promotional pen 1)Type: Gel-ink pen.2)Sample production time:3days3)OEM and ODM offered4 ... )Refill ink:Blue,Black and Red for your choice5)Size and weight ... to delivery,8days production time less than 10,000pcs . Gel ink pen