Ultimate Arms Gear Gunsmith Armorer Tactical Cleaning Kit Deluxe 21 pc Rifle Pistol Handgun Gun Tube Chamber Barrel Cleaning Care Supplies Brush Set Includes: Field Travel Pack Case + Hex Shaft Extension with Lock on End for a Firm Grip Handle for 14" Hard To Reach Deep Long Areas + 18 pc Stainless Steel / Nylon / Brass Brushes Sizes(mm): 9mm, 11mm, 13mm, 15mm, 17mm, & 19mm 6 piece stainless steel brush sizes: 9 mm, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm 6 piece nylon brush sizes: 9 mm, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm 6 piece brass steel brush sizes: 9 mm, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm Brush length: 4 inches For cleaning various surfaces