Pro-Series Poppers is 6" diameter and comes with the hardware to fit the Taylor Targets "Pro-Series Base" sold separately. The Pro-Series Poppers is rated for .22 rimfire through big bore rifle. Pro-Series Popper MUST be used with the Taylor Targets "Pro-Series Base".Specifications and Features: Style: Pro-Series Popper Targets: , 1- 6" Dia. Popper Use: .22 rimfire- Centerfire handguns/rifles caliber Materials: Heavy-Duty AR500 Steel UPC#: 091037687067