ITEM NAME:1/4 "Male to 3/8" male threaded Double male screw adapter A3K9 1/4 "Male to 3/8" male threaded Double male screw adapter A3K9 Screw the adapter at one end 3/8 "Male and the other end 1/4" Male designed. Made of aluminum alloy material, durable quality. Suitable for tripod 1/4 "or 3/8" screw hole. The product descriptions Material: aluminum alloy Color: Silver Length: 20 mm / 0.8in Width: 17 mm / 0.7in 4.1 "screw: 9mm / 0.35in 8.3 "screw: 9mm / 0.35in Product weight: 11g / 0.37 oz List of packages: 1 x 1/4 "Male to 3/8" Male threaded adapter Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm..Screw the adapter at one end 3/8 "Male and the other end 1/4" Male designed. Suitable for tripod 1/4 "or 3/8" screw hole. 4.1 "screw: 9mm / 0.35in. 8.3 "screw: 9mm / 0.35in. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.