Now, I should mention first that I have absolutely no idea of cello bows, let alone of stringed instruments basically - why I have this bow also "naked", ie, ordered without rosin, and was very disappointed that the sheet when stroking my electric guitar only "creative silence" by itself was ... ;-) Bear in mind so that a bow without rosin does nothing pure.
For my application (as already mentioned, the processing of an electric guitar) This bow is absolutely sufficient. He is, for the low price, amazingly well made and does exactly what he should do. Professional cellists will have probably not all too long in this fun bow - "working" wood keeps the tension of the hair well (over time) is not constant enough.