Pen, Size 0.5MM, Blue, Allows You to Vary The Width of Your Writing Like You Can W/a Fountain Pen Without Having to Worry About Leaks. The Unique Technology Means The Ball Is Held Within A Plastic, Not Metal, Surround Allowing F/more Movement and Greater Pressure Variations. This Also Makes F/less Friction When Writing at An Angle Compared W/other Rollerballs, BX=12PCS, 0.25MM and 0.45MM

Part Number: SIP8-02473