The RPM is very powerful. Comparable to kiara sky drill. I like this one better than the kiara sky drill I hadseller sent a new hand pieceSo far working fineMuy buena calidad la recomiendo, llego antes de tiempo ?❤️?Licensed nail tech working in a salon here! Switched from my old Kupa mani pro to this Belle portable efile. Never going back! This little thing is so powerful and SO quiet! Little to no vibration.OMG nail peeps…..this is the best drill ever invented. I have been doing nails for 31 yrs and have used many in my lifetime. This beautiful piece is worth your money. I would highly recommend. I might get another one just in case they ever stop making.I don’t like how the drill unscrews apart right next to where you tighten and untighten the drill bits. It comes undone all the time when you are trying to file clients nails. So dumbQuick shipping. Great product.First time I used it it got so hot immediately that I had to use a hot glove on the hand holding it. I let time go & just tried it again & it turned on & when it touched my nail it died., and yes, it was plugged in & the tool was in right?. I'm apparently two days late for a return?, Seriously?‍♀️?