The Pro Series Gong is a 10? diameter target that comes with a frame and a chain to fit the Taylor Targets ?Pro Series Base? (sold separately).This target can also be used with the ?Extension Set? (sold separately) to allow you to raise the height of your target to your liking. Using either of these methods in conjunction with the Pro Series Base provides a solid support for the target.This target is to be used at 100 yards for rifles and 25 yards for handguns.The Pro Series Gong is rated for .22 rimfire through big bore rifle (up to .30 caliber).