brinks home security, 1-9/16", 40 mm, laminated steel padlock, with weather resistant cover, solid brass pin tumbler for long lasting, smooth working action, double locking device for added security, tough thermoplastic jacket encases laminated steel body, & case hardened steel shackle resists cutting & sawing, silicone rings seal shackle way, sealing out moisture & dirt, lock is best used in outdoor home applications.