Delta series ar-15 complete brush set is specifically designed for cleaning your ar-15.The brushes are made of a high quality stiff nylon spun around steel cores for added stability.It features a brush with an 8-32 thread that fit on the included cleaning handle or any 8-32 cleaning rod.The brush set has everything you need to clean your rifle plus everything you need to keep your magazines clean and running reliably.He brush set includes: magazine/upper receiver brush with magazine take down tool bolt carrier brush chamber brush .22 cal bore brush and handle.Type: Brush/Swab KitSize: .223/5.56mm (Chamber)Quantity: 1 KitBristle Type: NylonMaterial: BrassSuitable For: Firearms