锁孔 （ 葫芦胆 ）
cylinder holes ( euro profile style)
锁孔内部开创性安装独家专利锁头支撑导向限位器，彻底解决锁头安装难以定位以及偏移走位的故障难题。
The inside of the lock hole is creatively installed with an exclusive patent lock head support guide limiter, which completely solves the problem of difficult positioning and displacement of the cylinder
