This is a holder for a bigger cable roll of ø150 x 80 mm. The cable roll turns freely inside this device, so you can just pull on the cable to unwind it, while the whole thing stands still in your cabinet.
This thing is designed for a roll of 100 m speaker cable 2x 0,5 mm² which comes on a roll of ø150 x 80 mm.
The author marked this model as their own original creation.