Basic finger spool with 10 holes on each side. Large center hole so it is comfortable to use with thick gloves. Also included is a stopper/handling knob thingy, for the same reason.I have printed this in multiple ways now, and I recommend the one in 45 degree angle. Easiest supports structure removal and least amount of sanding at the end.White spool on the pics is printed with older design and the sides are 1mm thinner, others are printed with this .stl.