GX24 has a shorter shaft base length of 15mm whereas G24 has a base shaft length of 22mm. This adaptor is for G24 base only. G24q (4 PINS) to Edison Screw (ES) [E27]. G24q male (4 PIN) to E27 female adaptor is 65mm high by 38mm wide (G24 to 27mm Screw).
