Brownells .50 Cal #8-32 Male Bore Mop, Pack of 3

The virgin wool mop is a traditional choice for effective bore maintenance. It absorbs plenty of cleaner or oil to saturate the barrel thoroughly and its flexible wool fibers contour to rifling. The brass hardware won't scratch your bore. Material composition includes wool fibers, brass shank and precision-engineered coupling components for enhanced durability and performance Length is 3.27 inches, thread size is 8-32