Rust-oleum certified protection guarantees lock body will not rust</br>Tough-cut octagonal boron-carbide shackle is 50 percent harder than hardened steel</br>Dual-armor construction?? laminated steel core with weather resistant cover protects against snow?? rain?? dirt?? mud?? grime and salt</br>Covered keyway and shackle seals for added weather protection</br>Dual ball bearing locking for maximum pry resistance</br></br>Product Description</br></br>The Master Lock no. 11