Adapter/lock nut for TEDDY BEAR DESK LAMP

This is an adapter/lock nut for Teddy bear lamp - standard thread for all standard e27 lamp socket - M40x2.5

Bear not included 

This model is used for locking the socket in desirable position for using different bulbs.

link for model - https://cults3d.com/en/3d-model/home/bear-lamp