The “SR-10A” is the only purpose-built padlock for your job boxes and tool chests. 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! Existing SR Customers Only: Choose Standard Rekeyable only if your key number is #26537–26547 or #93001–95802. All other customers should select UCS, PACLOCK’s higher-performance cylinder technology. Every Lock, One Key: Use one key for all your security solutions. The SR high performance pick/bump resistant 6-pin cylinder allows for more than 2,800 unique key codes. PACLOCK’s "SR-10A" features Standard Rekeyable cylinder technology, allowing it to be rekeyed but it is not compatible with UCS products. Compatible with key ranges #26537-26547 & #93001-95802. 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! The “SR-10A” from PACLOCK is the first lock specially designed from the ground up to work with any job box. The body width, thickness, and length were made to be as form fitting into the box receptacles without causing fitment issues. The shackle length was engineered with specific opening and closing lengths to ensure proper locking and unlocking of the job box. The shackle is made from stainless steel, is then case hardened, and then plated ~ all of this to make the best shackle ever. Toughest in class for strength and best in class for rust resistance. With the “SR-10A”, gone are the days of padlocks that don’t work in your job box; gone are the days of your padlock being hard to close; gone are the days of not being able to buy multiples of padlocks with the same keys. With PACLOCK’s “SR-10A” you can truly have it all.