The “SR-17A-1100’s” hidden-shackle design and 1.10” spread makes it ideal 1/2” chain, roll up doors, or trailer handles. For smaller sizes, see PACLOCK’s “17A-600” and “17A-850.” Machined with a 304 stainless-steel anti-saw pin down the neck of the padlock, making it extremely resistant to cutting attempts. Includes PAC-TETHER cable to keep your lock fastened to your trailer door so you’ll never leave it behind. Installed with PAC-BAND to keep grime and dirt out of the cylinder. 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: One key for your security solutions – trailer doors, hitch pins, Pelican cases, or cam locks! The pick/bump resistant 6-pin Standard Rekeyable cylinder allows 2,800+ key codes. PACLOCK’s “SR-17A-1100” 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! PACLOCK’s “SR-17A-1100” is a part of our “Block Lock” family of products. The “SR-17A-1100” has a spread that is 1.10” wide ~ ideal for heavy-duty 1/2” chain, roll up doors, or trailer handles. The “SR-17A-1100” 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! As with all PACLOCK’s solid body padlocks, the 6-pin cylinder is best in class for pick, bump, rapping, or any other type of surreptitious entry attacks. These locks are guaranteed to have 6-pins and include special “security pins” that thwart would be attacker’s attempts to get into your lock. A variety of keying options are available. Please contact PACLOCK if you cannot find the exact configuration you are looking for. Made in USA with global components.