The “UCS-10A” is the only purpose-built padlock for your job boxes and tool chests–engineered for boxes like KNAACK, RIDGID, and others! It features an industry-first 3/8” diameter “hardened stainless steel” shackle that is tough to cut and weather resistant, the best of both worlds! Every Lock, One Key: Use one key for all your security solutions – trailer doors, hitch pins, Pelican cases, or cam locks! The pick/bump resistant 6-pin UCS cylinder allows for 20,000+ key codes. American Manufacturer: Made in USA with global components by a family manufacturer hiring veterans and people with disabilities. Our product line is growing, so if you don’t see your lock, call us! PACLOCK's UCS-10A is engineered specifically for job boxes and tool chests. The lock is machined in the U.S. from 6061 aircraft-grade aluminum. It features an industry-first 3/8” diameter “hardened stainless steel” shackle that is tough to cut and weather resistant. All brass, aluminum, and stainless steel components render the lock rustproof. 6-Pin technology (more than the industry standard 4 pins) provides over 20,000 unique key codes and makes duplicate key combinations extremely rare, meaning that 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 U.S. precision and reliability, the lock body exceeds +/-0.003” tolerances for repeatable quality.