Gray Ops CNC Brass Marker Micro - .224 Yellow. Marks in rim of case across primer and on body of case. Use one or all 3 marker locations at the same time. Slotted design holds onto rim of case through the entire marking process for perfectly placed lines. Accepts any standard sharpie style marker and secure them at the correct height with the supplied thumb screws. Specifications for Gray Ops CNC Brass Marker Micro - .223: Manufacturer: Gray Ops CNC Color: Yellow Fabric/Material: 6061 Aluminum Package Contents: Gray Ops CNC Brass Marker Micro - .223 Gray Ops CNC GO-BMM2: Brass Marker Micro - .224 Yellow