Features: brand new and durability 5/8"-27 Female thread to 3/8"-16 male thread adapter, allows you to convert microphone holder and accessories from 5/8" thread to 3/8". Non-slip knurled surface, deep without burrs, with thread, easy to install and stable. Knurled outer flange increases grip for ease of tightening and loosening. Aluminum alloy made, anti-rust, anti-corrosion, strong and durable. 5 / 8-27" internal thread (internal thread), 3 / 8-16" external thread (external thread). Specifications: Material: Aluminum Alloy Maximum Load: 6-10 kg Application: Tripod Size: Approx. 18x21 mm/0.71x0.83 inch Screw Interface: 5/8" to 3/8" Quantity: 2 Pieces Color: Black/Silver(Optional) Note: Please allow 1-3mm error due to manual measurement. please make sure you do not mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item,please make sure you do not mind before ordering, Thank you! Package includes: 2 Pieces 3/8 Male to 5/8 Female Adapter Screws