This model was only designed for the printable competition of designing a Scratcher tool. 

You can mount this Scratcher on your finger. You can print a separate piece for each finger. The size of the model to be scaled along the width as per to size of your finger.  

You can use the below given formula to calculate the scaling %. 

(Width of finger (mm) x 100)/16

No support is required to print the model. 

Because of thin top layer, it is flexible and can adjust the finger movements and bending  

You can use it as scrubber during bathing if printed from flexible filament