Pin tumbler locking mechanisms and chrome-hardened steel shackles to resist tampering. Brass bodies and cylinders resist corrosion. For storage cabinets, drawers, display and file cabinets, gun racks, luggage, and general security. Two brass plated keys included. 150 has 2" wide case, 9/32" diameter shackle, and 1" horizontal shackle clearance. 160 has 2-3/8" wide case, 11/32" diameter shackle, and 1-1/4" horizontal shackle clearance. Highlights: 2" (50mm) wide body 5 pin tumbler security Solid brass lock body is stylish and strong Hardened steel shackle Carded WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65Warnings.ca.gov/