NcSTAR VISM is a manufacturer of high quality tactical accessories. They have been manufacturing high quality products since 1997. They are dedicated to providing customers with top of the line pouches, optics, and tactical equipment for the most affordable price out there. The NcSTAR TBCAR15 Chamber Brush is designed for the chamber for 5.56/.223 rifles. It is composed of steel and features bronze bristles to ensure you get the deepest and most efficient cleaning for your rifle. This brush works with GI Cleaning Rods and has threads to fit in these kits or rods. Item Condition – Brand New in packaging Specifications Manufacture: NcSTARMaterial: Steel Length: 3.6″Weight: 0.3 oz Features: – Compatible with 5.56/.223 rifles – Threading compatible with GI cleaning rods – Composed of high quality steel- Bronze bristles for deep and efficient cleaning Package includes: 1 Piece – NcSTAR TBCAR15 5.56 Rifle Barrel Bore Brush for Cleaning Rods