1x Bayonet, BC, B22, Brass Push Bar 10mm Thread Entry Lamp Holder With Lamp Shade Ring Collar & Earth. Bayonet Cap (BC) [B22]. This Bayonet Lamp Holder is 55.5mm high by 33mm wide (22mm bayonet). It also includes an earth and lamp shade ring collar, which can be unscrewed to allow fitting of a Lamp shade.
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