Lightweight, and durable. With a simple twist of the knob, it dispenses any Howard Leight disposable foam earplug. Refilling and mounting the dispenser is just as easy. Durable plastic design with a base that is able to fit on existing wall mounts of other dispensers, including the Howard Leight LS400, as well as competitor mounts. The universal hole positions match many other dispensers, eliminating the need to drill new holes. Holds 400 pairs of uncorded earplugs.