The function of this Blower is to gently remove dust & erase smudges from delicate equipment without leaving residue. Perfect for cleaning digital , , digital camera lens, binocular lens, and lens, filters, musical instruments, etc. Features - ColorAssorted Color - Material: TPE. - Size: 14.6 * 5.5mm. - The function of this blower is to gently remove dust & erase smudges from delicate equipment without leaving residue. - Perfect for cleaning digital , , digital camera lens, binocular lens, and lens, filters, musical instruments, computers, keyboards, cellphone. - When using a blower, pay attention to avoid blowing the ash can not clean up the place. Because dust levels sticks to the surface , so it will be easier from the side blowing dust blown . - These air blowers never need electricity, batteries or refills. They can always be used, as opposed to compressed gas containers or electric air compressors. Package list: 5 x Air Blowers