This nipple gives the owner of T/C muzzleloaders the option of using the much larger musket caps. Musket caps produce ignition fire that is 3 times hotter than standard No. 11 percussion caps. Made of stainless steel, these nipples are carefully machined & long lasting. Fits T/C Traditional cap locks and T/C in-lines (except Encore 209x50, T/C Scout & Omega).