■材質: 黑色尼龍旋鈕及主體.擋片--鋼鐵、鍍鋅 ■Matorial: Zinc Alloy ■Matorial:Black nylon knob and body.Cam--Steel zinc plated ■轉動旋鈕可調整擋片深度,達到門板壓縮密封效果,安裝迅速 ■Rotate the knob,can adjust cam depth,quick install
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