ABUS 83WP-IC/53 C LF-SCHLG S2 LFIC All Weather Schlage Large Format Interchangeable Core Rekeyable Solid Steel Padlock w/o core with 1 Inch Shackle Highly corrosion resistant due to surface protection Shackle made from hardened steel Double bolted: both sides of the shackle are secured by bolts or balls- increased protection against attacks and manipulation Key retaining: a key is needed for locking, Lock retains key until locked