PACLOCK's UCS-17A-850 is a padlock with a spread that is 0.850” wide ~ ideal for 3/8” chain, storage containers, gates, and sheds. The UCS-17A-850 features a hidden-shackle design that extremely reduces cutting attack attempts. PACLOCK installs a solid stainless-steel anti-saw pin down the neck of the padlock which makes it very hard to cut the padlock in half. For ease-of-use, we include a PAC-TETHER to keep your padlock attached to your application while unlocking. Never lose your padlock again! 6-Pin technology (more than the industry standard 4 pins) provides over 20,000 unique key codes and makes duplicate key combinations extremely rare. Your key number is virtually unique to you. Stainless steel spool and serrated security pins make the lock pick, bump, and drill resistant. Includes the PAC-BAND, a field-replaceable silicone cover to protect the cylinder from the elements. CNC machined for precision and reliability, the lock body exceeds +/-0.003” tolerances for repeatable quality.