Fits: .22-250 Remington, .243 Winchester, 6mm Remington, .244 Remington, .250 & .300 Savage, .257 Roberts, .25-06 Remington, .270 Winchester, 7mm-08 Remington, 7x57, .308 Winchester & .30-06 caliber rifles

Specifications and features:
Flexible nylon rod & Tynex bristle brush
Removes powder particles & lubrication build-up
Will not scratch chamber wall