4x 370mm B22, BC Flexible Lamp Extender, Bayonet Orientational Extension, Omnidirectional Bulb Holder. The B22 to B22 extender is 370mm in length by 32mm wide (22mm Bayonet to 22mm Bayonet). Allows adaptation of light fittings & sockets; for use as a flexible lamp highlighting particular areas for photography applications or for working on intricate objects.