Features: 1/4 female to M4 M5 M6 M8 M10 M12 male, M4 M5 M6 M8 M10 female to 1/4 male screws are available. Aluminum alloy material, smooth surface, strong and beautiful, wear resistance and corrosion resistance, not easy to rust. CNC processing, finely polished without burrs, which can increase friction and make it easier for you to twist the screw. Wide applications, can be connected with projector mount adapter photography accessories gimbal camera tripod etc. Smooth thread, makes it easy to install and remove. Specifications: Material: Aluminum Alloy Type: A18/A19/A20/A21/A22/A23/A29/A30/A31/A32/A33 (Optional) A18: 1/4 female to M4 male A19: 1/4 female to M5 male A20: 1/4 female to M6 male A21: 1/4 female to M8 male A22: 1/4 female to M10 male A23: 1/4 female to M12 male A29: M4 female to 1/4 male A30: M5 female to 1/4 male A31: M6 female to 1/4 male A32: M8 female to 1/4 male A33: M10 female to 1/4 male Quantity: 2 pcs/set Note: Please allow 0-1cm error due to manual measurement. make sure you don't mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 2pcs Conversion Screws