Expandable square socket for tubes from 30 mm to 32 mm
This socket is made up of a 10 mm diameter steel bolt, a black nylon body, a conical piece, and a washer, also made of steel.
It is primarily used on castors with a bolt hole (with a central hole) for fixing in a tube by extending the socket. It will simplify the installation of your castors on each of your pieces of furniture.
Available in different sizes, to be chosen based on the inner diameter of your tube.