GU10 ceramic lamp holder with connection terminal box, 2A 250V, fit any GU10 lamp connector socket. Double layers insulation design: 20 cm wire with white insulation cover, stops the wires burning out by the heat, prevention leakage currents. GU10 ceramic base holder: more strong fire prevention, high temperature and long service life. Terminal box: 2 terminals connect, used to extend the power cord, more firmly, more secure routing. Lamp socket suitable for gu10 LED bulbs, gu10 spot downlights, halogen, recessed fire downlights and etc. Product Package:8 pack 2A 250V New Regulation GU10 mains holder for LED or halogen lamps. Size: Ceramic base: 27 mm diameter. Double layers insulation lead: 20 cm. Terminal box:48 mm(L)* 22.5mm(W)* 19.8mm(H). Material: ceramic+ plastic. Cable: Teflon copper wire , 0.52mm, better anti-oxidation performance, reduce the producing of heat, which make it more durable and eco-friendly, tow colors easier to distinguish. Application:Gu10 lamp socket bases adapter is small size, light weight, easy to install, GU10 mains downlighter lamp holders terminal block/bridge adapter is suitable for gu10 LED bulbs, gu10 spot downlights, halogen, recessed fire downlights and etc.