ASP 21" Expandable Batons. The famed ASP telescoping Baton provides both the plainclothes and uniformed professional with a compact, inconspicuous, yet devastatingly effective impact instrument. The ASP expandable batons offer the concealability, convenience and low profile image of a billy with the reach, controllability, and tactical superiority of a full size baton. Black Chrome: A flat black finish is permanently manufactured onto the chrome and steel baton. Foam grip Federal: These are coated in a permanent flat black finish directly on to the steel. Thermoplastic grip, ASP Aluminum (Airweight) Airweight: The aluminum sections are uncoated and are of a light color. Foam grip Duratec: These are aluminum and of a light grey color. Thermoplastic grip.