Handle Material zinc alloy bolt material stainless steel (corrosion resistance, no rust) Cylinder Material Zinc use of copper-clad interior door lock center distance 50mm color finishes bright chrome panel Material zinc alloy marbles Material Copper marbles bolt type double rounding the opening direction of general-whether with a key with a key style overall fit door thickness 35-45mm Product Description This section door lock zinc alloy with wear-resistant, corrosion-resistant characteristics, surface bright chrome, smooth, no glitches, not to hurt the hand, curved handle design, has a unique appeal, unique, it attracts you? Delivery period Delivery period is about 15 days, if out of stock we will contact you in time. Occasionally due to weather, road conditions and other factors cause the delay of goods also give the buyer a lot of understanding! The cost of the seller to bear the shipping in some areas need to fill shipping details contact customer service online. Care instructions the best holding closed handle, bolt spin into the lock, closed the door and then let go, do not force Zhuangmen, otherwise it will affect the life of the lock. Tips all products are taken in kind, but because of shooting technology, light, display parameters and other factors affect the picture will be different, the product color to prevail in kind. (This product with copper chrome key 3 does not include installation)