These small brass collets from Benchrite adapt to any brand cleaning rod to fit the Dewey Rods on our Stainless Rod Cases. The brass adapter is .375” long and is secured to the cleaning rod with an allen screw. The adapter is intended to be left on the cleaning rod, and will not interfere with normal cleaning rod use. These adapters fit the diameter of the collet on our Dewey rods, so any brand of rod can be used in the cases. We make two sizes of adapters – one for 22 cal. to 6.5 cal. rods, and a larger diameter adapter for 7mm to 30 cal. rods.