Large cooling holes designed on the back and two sides of the nail fan dust collector, it offers stronger & continuous heat dissipation, so it prevents the nail dust collector from overheating even you are doing long-lasting filing, polishing or carving jobs. Comparing with others' nail vacuum dust collector, our nail dust collector offers more cooling holes at the two sides, It can dissipate heat faster and then protect the motor machine better, in order to prolong its service lift. There are 2 replaceable filters in the nail vacuum dust collector package, the filter can absorb all kinds of dust and cutilcles, and no dust-leaking. you can easily take out the filter and conveniently clean it with a hairdryer or dust brush, Change it every 3 months even for frequent user, no need to change it every time. DON'T use water to clean the filter in order to prolong its useage time. nail dust collector quiet: Considering the feedback from customers that the sound is too loud when using it, we upgrade the machine motor into a much more expensive centrifugal fan, our nail dust collector offers normal acceptable sound while working, so it won't affect the communication between you and your clients. Swivel button to turn ON/OFF or to adjust the suction power, The max power is 120W and it offers 3 suction power for your choice, Low gear at 6000 RPM, Medium gear at 9000 RPM, High gear at 12000 RPM, You can adjust it accodring to your different job requirements, such as filing, polishing, buffering, carving or crafting. Comparing with other's nail dust collector which only has 1-2 suction power at maximum 4500RPM, our dust collector nail tech offers more efficient & practical function. Our nail dust collector is equipped with an upgrade centrifugal fan motor instead of an ordinary fan. It's a brushless turbo fan so it provides much stronger suction power and quieter operation to keep you away from dust inhalation & nail dust. The stronger suction power can adsorb the nail dust and fly ash from 360 degrees efficiently, the nail vacuum dust collector is an advanced nail tool which makes your nail salon more reliable and professional.