This is a screw diameter conversion adapter. Please note: This is not a conversion adapter for a landing net. [Specifications] Male thread: M8, pitch 1.25 Female thread: M12, pitch 1.75 Total length: Approximately 35mm Threaded portion length: Approximately 15mm, depth: Approximately 16mm Width: Approximately 15mm Color: Gunmetal It can be used not only for diameter conversion but also for extension.