Universal Nipple Wrench fits Musket Caps and #11 NipplesMade of hardened steel, this is a high quality tool. One wrench fits all #11 nipples (except the T/C Scout) AND it fits Musket Cap nipples. It supplies the leverage necessary to remove even the most stubborn nipple from your muzzleloader. The bore of this tool is large sized for musket caps nipples but it can also be used (with a looser fit) for the smaller #11 caps.