Weighing approximately 45% less than comparable steel batons, the ASP Airweight 21" expandable is an excellent choice. The Airweight is constructed on 7075 Aluminum tubing, which is the same alloy used in the receiver of an M16 rifle. In addition to being noticeably lighter, ASP Airweights move more rapidly than steel batons allowing for a faster bridge between strikes. The Airweights also features a Electroless Nickel plating which provides increased surface hardness that will not scratch, rust, or wear. Technical Information Expandable: Yes Locking Mechanism: LEVERLOC Expanded Overall Length: 21" Baton Tip: Standard Ball Material: 7075 Aluminum