The Gun Boss Multi-Kit Double Duty Cleaning System is a comprehensive cleaning kit designed for deep cleaning of 9mm and 357/38 caliber guns. With a focus on efficiency and effectiveness, this set includes a bore brush and bore mop to make cleaning easier. The included case ensures that all the tools are organized and protected when not in use. Made by Real Avid, this cleaning kit is a must-have for any gun enthusiast looking to keep their firearm in top condition.