This Hoppe's 1463BK AR Multi-Pack Bore Chamber Kit includes a variety of brushes and jags designed to keep your firearm clean and well-maintained. The kit comes with a bore brush and is suitable for multiple chamber sizes, making it a versatile addition to any gun cleaning kit. The set also includes a mop kit to help you achieve a thorough clean every time. With this kit, you can enjoy peace of mind knowing that your firearm is well-maintained without having to worry about its condition. Whether you're an experienced gun owner or new to the world of firearms, this Hoppe's kit is a must-have accessory.