The Gray Ops Brass Marker Micro is perfect for the shooter that is always forgetting to mark their brass before a match! This brass marker takes up no space at all. Hook it to your pack, your keys, or your chamber flag string. This is "THE" brass marker that you'll will want to make a part of your match kit. Made from Polypropylene this brass marker allows for a snug, yet adjustable fit on your sharpie every time. It is less brittle than most 3D printed products making it extremely durable. Quick, easy, perfect lines. Marks in rim of case. Slotted design holds onto rim of case through the entire marking process for perfectly placed, effortless lines. Note: Accepts any standard sharpie style marker, not included. Split key ring included.