Thread size: M8
Diameter: 6.6cm/3.52cm
up height: 3.7cm
up bolt thread: M8, M16
Color: silver/silver+golden
Material: zinc alloy, brass
High-quality brass material is not easy to rust
Spring mechanism easy to pop up the thread
Seal ring: 3.95cm/3.7cm
Suitable for most standard accessories
100% Brand new and high quality.
Closed height: 2.8cm
Features: