Gray Ops CNC Standard Brass Marker Silver. 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 Standard Brass Marker: Manufacturer: Gray Ops CNC Color: Silver Fabric/Material: 6061 Aluminum Package Contents: Gray Ops CNC Standard Brass Marker Gray Ops CNC GO-BRMKRS: Standard Brass Marker Silver