This is a set of screw adapter with hole. 6 Screw Adapters and 1 Hex Key in one package. It is certainly a powerful tool for improving the use of your photography rigs. Great little gear for any photographer or videographer to own. Are you looking for high cost-effective, high-quality holder adapter screws? If you have some kind of camera stand or mic arm stand with small screws, but your camera has a large screw, then this is the right adapter for you. It has 1/4" male to 1/4" male thread adapter and 1/4" male to 3/8" male thread adapter, used to connect the stand to the holder. This thread screw adapter is made of aluminum alloy to ensure quality and durability. An excellent small device for any photographer or videographer, an excellent adapter also to connect the microphone to the microphone suspension arm scissor arm bracket. The pakage includes: 3 x 1/4 male to 1/4 male with hole screw adapter, 3 x 1/4 male to 3/8 male with hole screw adapter, 1 x hexagonal wrench.