These are a flogger accessory, if you're interested in using one of our double-bearing swivel handles for finger floggers. The body of the handle is black resin coated in a protective lacquer, and the swivel holds a clip for swapping accessories. This style has a large ball tha fits well in the palm at about 1.75" diameter.
This integrates well with our original finger floggers we've made over the years, and with other makers' toys.
 
Feel free to message us with any questions or additional information.