1.steel lock face, has a higher intensity than the zinc ... keys Structure Features:Operating temperature range:-10-50 centigradesteel lock face, has a higher intensity than the zinc alloy ... durable stainless steel handles, corrosion-resistant, non-color standard lock body, General, reliable Cylinder PCB connection with the use ... dimensions280 * 74 * 63mmLock Thickness21cm Fingerprint Security Door Lock