This Roll On Pilfer Proof (ROPP) Headset is for single station ROPP cappers. It is designed and manufactured from start to finish right here in Michigan. It is made from corrosion resistant stainless steel and is designed to work with Amcor Stelvin 30×60 caps. This design requires a single station capper that can provide the top load force. Give us a call if you need onsite support for installation.