BCP 10pcs Light Socket Adapter Converter For E40 Mogul Edison Screw Base to E27 Medium Edison Screw Base Package included: 10pcs Color: white; Material: PTB. Easily converts E40 Mogul Edison Screw Base to E26/E27 medium screw base. Easy to use, screwing into existing socket as usualSave money of replacing the original lighting fixtures. Product Dimensions: 1.75 x 2.00 inches