Come and see our amazing products! atented thread design at the handle and thumb head allow a thumb grip: the optimal way to fully transfer your power to the target. Won't break. Won't rust.Weighs half as much as a regular tactical pen when it is detached as the ballpoint only, making it practical for daily use.This solves the balance issue too.smear-proof ink, ink quickly dries with a consistent ink flow. Also compatible with low-price standard refills. Pls confirm further with us if any query about packing info, inventory status and time schedule.