80 series ball mortise locks 1.Plate: 150mm. A newest design. 2.A full-closed body structure is to prevent sundries such as wood bits from entering lock. 3.Varieties of handles and mamy kinds of surface treatment are available. The angle to turn the handle is small, so it is easy to do that. 4.A streamline design for special handles make handles more comfortable and beautiful. 5.The direction to use bolts can be changed to suit a left-direction or right direction door. 6.Door locks, bathroom locks, gate locks and decoration locks are available