1Good Quality Aluminum Alloy: Good quality aluminum alloy material, wear resistant, durable, and corrosion resistant 2For Various Caliber Nozzles: Universal gun cleaning kit contain various sizes, suitable for various caliber nozzles 3Come With Storage Box: Comes with a wood storage box, convenient to access and easy to carry 4Good Cleaning Effect: Equipped with cleaning swabs and 5 cleaning mops, the cleaning effect is good 5Universal Handle: Universal handle is comfortable to hold, no fatigue after long time use Item Type: Universal Gun Cleaning Kit Material: Aluminum alloy Parameter(manually measured, there is a certain error): 6mm Aluminum Rods: Rod Diameter: Approx. 6mm / 0.24in, Length: Approx. 267mm / 10.5in 4mm Aluminum Rods: Rod Diameter: Approx. 4mm / 0.16in, Length: Approx. 267mm / 10.5in Brass Wire Brush Caliber: 12 ga, 20 ga, 410 ga, 45 ga, 40 ga, 38 ga, 17 ga, 30 ga, 270 ga, 22 ga 5 cleaning mops are suitable for the above caliber 3 x 6mm Shotgun Barrel 3 x 4mm Gun Barrel 10 x Brass Wire Brush 2 x Solid Brass Adapter 2 x Plastic with Grooved End 5 x Cleaning Mop 1 x Handle Adapter for 17 Caliber Rod 1 x Universal Handle 1 x Cleaning Cotton Swab 1 x Wooden Box Please match the appropriate design size before use.