Uni PX-21 Paint Marker Fine Bullet Tip 1.2mm Yellow (Pack 12) Go bold with this marker and have fun with revamping and decorating a whole host of materials. The uni-ball Paint marker is designed to deliver vibrant colour in waterproof ink on any surface. So give some love to some items in-need of an update and get drawing! Available in black, gold, silver, white and yellow, the penâs precision 1.2mm acrylic bullet nib delivers a crisp, clear line so you can create a collection of bold, confident marks and designs. This amazing marker enables you to make permanent ink designs on paper, glass, metal, plastic, wood, fabric and stone. And you can make your marks secure in the knowledge that your work will last, and itâs safe to use. The Super Ink is heat and water resistant as well as being fade proof and contains no sulphur or silicon. This oil-based marker is great for artists, students and anyone who wants to make a lasting mark.