Currently, Amold has four types of needles. The 100-pin and 256-pin array are solid needles for simply puncturing. The 30-pin array is for drug coating at the tip. The 13-pin array is for drug delivery through its hollow channel. The shapes and counts for sure are customizable. The material used is PEEK. We tested its mechanical performance, and so far, it gives us the best results regarding penetration, etc. Other materials are also possible depending on their moldability. The 30-pin also serves as a dissolvable/degradable array. Hence we also use hyaluronic acid with a casting/compression molding hybrid process to make the microneedles.