FOTGA Professional Rocket Cleaning Air Blower Duster for LCD Screen Keyboard Digital SLR Camera Telescope Lens Filters Perfect for cleaning digital SLR, SLR, digital camera lens, binocular lens, and telescope lens, filters, musical instruments, computers, keyboards, cellphone, etc. Air inlet valve design prevents air back flow from nozzle. Detachable supper air stream air nozzle. Tripod base design provides free-standing function. The function of this Blower is to gently remove dust & erase smudges from delicate equipment without leaving residue. Excellent way to remove dust off sensitive camera parts without physical contact. Better for the environment than canned air. Universal (1/4" -20 screw) & (3/8" screw) digital camera link attachment Package Including: Rocket-Shaped Air Blower x1