Giottos AA1910 Medium Rocket Air Blaster (6.6) Overall 6.6 inches long with a 2.25 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 6.6-Inch long 2.25-Inch long nozzle 2.1-Inch diameter Durable long-lasting construction