Comes in a set of 2. The Black Arts Design 24mm Gauge Protectors were designed to protect the regulator and air tank pressure gauges on the Air Venturi Avenger. These gauges are extremely exposed to knocks or bumps which could potentially damage the gauges and gauge faces. The Black Arts Design Gauge Protectors are designed to absorb impact and protect your gauges from knocks, nicks, and bumps. Material TPU (thermoplastic polyurethane) TPU was selected for its rubber-like qualities. Due to its high elongation, TPU is capable of absorbing impacts where traditional plastics or metals will simply transmit that force to the gauge itself. Features Secure fit TPU material stretches around the gauge and a lower internal lip locks it securely to gauge body. Shock and impact absorption TPU possesses high elongation and is capable of absorbing impacts, unlike traditional plastics and metals. Full coverage design The Black Arts Design Gauge Protectors are designed to cover as much of the gauges as possible without interfering with reading the gauges. Simple to install and remove.