Tested against cutting, twisting, and pulling of shackle, Yale High Protection Padlocks will withstand most forms of attack and feature hardened steel or boron shackles as well as double locking for added security. The High Protection range is suitable for both inside and outside use thanks to its 120-hour corrosion resistance to ensure protection against extreme weather conditions. All padlocks have also been tested to 10,000 cycles durability to ensure maximum performance. Whether you're looking to secure gates, ladders or shutter doors, Yale has got you covered!