The wooden bolt heads are arranged in alternating geometric patterns-specifically an eight-studded circle and a square with inverted corners.
木螺栓头被设计在交替的几何图案中——特别是一个镶嵌圆形和一个正方形倒角。
2
Slam latch is screwed onto latch support which is either screwed or welded to the door. Assembled without insert it can be opened with a tapered square key. Bolt has free stroke.
Mesh column connection with the use of semi-circular bolt head square neck, with anti-theft rings and washers, to prevent the separation can be artificially demolition.