Merck Allflex 2-in-1 Marking Pens

Merck

 One pen with two marking tips (fine and broad)
Easy-to-hold and easy-to-use pump action
Fade resistant black or white ink
Specially formulated for use for Allflex ear tags
SKU: PEN (Black Ink)
SKU: PEN-WHITE Ink)

Best results are obtained by shaking the pen thoroughly, writing the ID once on the tag using the Allflex tag pen, letting the ink dry and then writing over the ID a second time. Following these steps should provide you with an ID that is readable in the paddock for years!