PRECISION MANUFACTURING: These male and female camera screw adapters are all manufactured with INTERNATIONAL STANDARD which is suitable for most photographic equipment. DURABLE MATERIAL: Most of the adapter screws are made of aluminum alloy, and the 3/8" male to 1/4" female screws are made of brass, rustproof and solid. MULTI FUNCTION: All these camera screw adapters have different uses, they are widely applied to cameras / tripods / monopods / ball heads / lights / rigs and other camera accessories. ALL IN ONE SET: If you are a senior photographer, you will know how important it is to have such a set of common parts for photography. They will help you solve many photography problems. VARIOUS ACCESSORIES: 1/4" Male to 3/8" Male Screw(3PCS), 1/4" Male to 1/4" Male Screw(3PCS), 1/4" Female to 3/8" Male Screw Nuts(10PCS), 1/4" Female to 3/8" Female Adapters(3PCS), 3/8" Male to 1/4" Female Brass Adapter(1PCS), 1/4" Male to 3/8" Female Brass Adapter(1PCS), 1/4" Male to 3/8" Male Metal