Giottos AA1920 Rocket Air Blaster Small-Black Overall 5.3 inches long with a 2.0 inch nozzle Produces a large blast of clean directional air Instant rebound of bulb pressure One way valve brings clean air and does not re-distribute the dust Made of high grade long life silicon rubber Stands upright 5.3-Inch long 2.0-Inch long nozzle 2.1-Inch diameter Durable long-lasting construction