Nickel-plated brass with a plastic support base.
This support is supplied with a hook for conveniently holding a pair of pith balls connected by a string.
Dimensions (W x L x H): 100 x 70 x 220 mm. 

Physics School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Pith Ball Support Electrostatic Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Physics Lab Experiments for Engineering Teaching Lab in Universities