This is only the pen tip for a stylus. It is compatible with screw-type styluses with a 5mm screw diameter for the attachment part. No tools are required for replacement. You can attach a new pen tip simply by turning it with your hand. By replacing the pen tip, you can minimize damage to the microfibers and maximize the lifespan of the pen tip. The pen tip material uses conductive fiber. Compared to rubber styluses, it can be used with high sensitivity and smoothness. It is ideal for games like Tsum Tsum and Puzzle & Dragons. It also supports capacitive touch panels such as smartphones like iPhone and Android, tablets like iPad and Android, and Nintendo Switch. [Set Contents]: 20 replacement pen tips