Constructed of the technologically advance Impact Seal material. The bullet passes through the self healing material with minimal damage. This material is rugged enough to handle the repeated punishment from all calibers of rifles and handguns as well as BB and pellet guns. With a competitors target holder, one missed shot could mean the end of your target practice. Unlike plastic holders, this material will not crack or break. 1733-0128: Includes both Knock-Out Disc and Pigeon perch target.