Country of Origin:China(mainland)Metial:BrassSurface Structure: Bronze Green (ACU) Function:Standard Lockset/Decorative LocksetFinish:ACU-ASelect Body:87 Lock BodyLock Cylinder:3G American Lock CylinderWith KeyLock Body:America-A Lock BodyCylinder:40/50mmDistance:86mmBackset:60mmPrimary competitive advantages:1. quality approvals2.competitive price3.reputation4.guarantee5.service6.prompt delivery7.long lifeEntrance Lock LC series is a superior, elegant, European style, world-class material standards, highlight the distinguished identity.Our products are made from Japanese Industrial Standard JIS3603 brass materials and the surface finishing on our products have passed the U.S.A STMB 480 Hour SST (Salt Spray Test). We promise:our brass lock panels and handles are fully of brass forging material.QQ:614717743