About this item • Unique Square Drill Head- The diamond art pen has both the metal square and round tip heads with the screw-on application tips. The thing that is so fantastic about this drill pen is the attachment for square drills. If you work with square drills a real time saver and very precise in the process of diamond art painting. • Ergonomic Diamond Art Pens- The diamond art painting drill pen adopts proper ergonomic design. One end has a comfortable rubber grip and the other end has an engraved design. One end slightly thicker than the other, but the nibs are interchangeable so you can change it as your preference. It’s easier to hold for longer periods of time without your hand getting fatigued. • Metal Thread Replacement Tips- The diamond drill pen has durable square & round metal tips, an angled tip, 3, 6 and 9 drill tip and a straightening tool. Each placer attachment has a metal screw that can be screwed in to either end of the pen at any time, instead of just pushing, making them more solid and sturdy. • Enjoy Diamond Art Time- Easy to use and is comfortable to hold. Suitable for adults, beginners or children. With multiple bead placers, it can help you complete the 5D diamond art painting much more easily and faster. This diamond art painting tools pen will definitely last for a long time versus the plastic or resin pens. • Widely Use- This pen can not only be used as as 5D diamond art drill pen, but also can be used as nail decoration drill pen, embroidery decoration drill pen, mosaic art craft decoration pen, ect. It’s a great gift for diamond art painting lovers and art lovers.