Made of brass. It is rotary type and easily installed/operated. When it is not in use, the hook is vertically fixed by a spring. Screws: ø 4.1 mm x 8.
由黄铜制成。它是旋转式的,安装/操作方便。不使用时,挂钩由弹簧垂直固定。螺钉:ø4.1 mm x 8。