Based on this product's specifications, here are some alternatives and similar models
GTV lamp adapter E40 to E27 AE-E40E27-00, screw-in converter for E40 base to E27 bulb
Summary description:
GTV E40 to E27 lamp adapter AE-E40E27-00 converts a lamp holder with an E40 (giant Edison) socket to accept standard E27 bulbs. The screw-in converter allows installation of E27 lamps in fixtures designed for E40 bases, enabling compatibility with common household bulbs for replacement or testing. Suitable for indoor lighting retrofits and temporary use where E27 lamps are needed in E40 fittings.