Classic Handgun Kits include two working rod sections, both of which are threaded to accept all standard #8-32 accessories. Kleen-Bore's swivel handle section will clean up to a 7 barrel, and with the included 2¾ rod extension, handle up to a 10 barrel handgun. Both of the #8-32 threaded handgun rod components can be identified by a groove in the rod end. .40/.41/10mm