1. Made of high quality aluminum alloy, this well constructed tripod screw adapter is anti-rust, anti-corrosion, no worry of breaking, ensures long service life. It's a great replacement for plastic adapter, connecting your camera or other devices stably and perfectly. 2. This camera screw has a complete and deep thread without burrs, excellent grip makes it stable and firm, easy to install and remove. Great little piece of equipment to own for any photographer. 3. This 1/4 screw adapter fits for any DSLR SLR camera tripods, monopods, telescopes, ball heads, lens collars, lens plates, light stand etc, that is with 1/4 hole. 4. These precision made 1/4-20 to 1/4-20 (male to male) tripod screws meet international standard, enable you to gain more rig combination possibility and freedom in your photo shooting. 5. These threaded converters are well packed in a small plastic bag which is lightweight and easy to carry. They can even serve as back up for the counterpart in your rigs, camera screws replacement, widely used on rigging two photo equipment devices together. A-must-have little pieces for any photographer. Please Note: Please choose the correct one that you need.