Tripod Head Mount Conversion Screw Thread Adapter 3/8 inch (Male) ⇔ 1/4 inch (Female) Metal Set of 4 Screw Adapter (1/4" Female ⇔ 3/8" Male) for Monopods/Tripods - Set of 4 * To reduce shipping costs, we plan to ship via "Standard Mail." Delivery will take 2-4 days (excluding Saturdays, Sundays, and holidays), or 4-6 days if weekends are included. Furthermore, there is no delivery on Saturdays, Sundays, and holidays. If you are in a hurry or prefer anonymous shipping with tracking information, please change to "Mercari Delivery." We will adjust the shipping cost by adding the difference (a flat rate of 100 yen). (Please comment in advance) This adapter can be used when you need to convert between the 3/8 inch screw size, which is common in Europe, and the 1/4 inch size. Attachment and detachment can be easily done using a flathead screwdriver, coin, etc. Compatible with ball heads, free-tilt heads, base mounts, photography tripods/tripods, shooting grips, LED lights, speedlights, and flash brackets. Material: Metal Weight: Approximately 3g (per piece) * The tripod head etc. in the photo are not included.