AIR VACUMM & BLOW GUN SET Weight: 1.47lbs (0.67kgs) Length: 145mm (Gun body) Suction: 9cmHg (with dust bag) Ave. Air Consumption: 3.36CFM Min. Hose Size: 5/16" Accessories: Extention Tube: In addition to the suction/ blow funtion, it also serves as an extension tube. Flat Tube: Enter this tube into the slot with a width of 1.5cm to 15cm in depth for narrow space cleaning. Brush: Adjust the angle of the 360° rotating brush head to clean the desired area. Small Dia. Tube: The 0.9cm diameter small tube can easily clean the dust in/on very small spaces. Dust Bag: With two layers of cloth, prevent the bag from brake by glass easily. Zipper at bottom of bag for quick removal of dust.