Perfect for customizing bead-able pens—simply glue an acrylic bead, clay charm, or any decorative item to the flat side. The double-sided version is ideal for magnetic pen designs: attach a charm to one side and a magnet to the other, then display on your fridge or workspace. This versatile 3D printed anchor lets you create personalized pen toppers and decorative accessories exactly how you envision them. Compatible with standard 16mm beads. Hole in bead is 2mm making it a tight fit - you can use the bead as a topper or screw it down to where you need it. Magnets needed are: (0.7x0.12"/18x3mm)