Tuff Stuff 4125 1-1/4" Laminated Steel Padlock with Protective Bumper. Padlock body constructed of laminated riveted plate steel for maximum strength. Hardened steel shackle protects against sawing and cutting. Precision engineered, double locking mechanism on both shackles provides added security and strength. Brass pin cylinder resists picking, provides long life and smooth operation. Protective bumper surrounds padlock to cushion impacts and prevent damage to doors and painted surfaces. Small enough for most hobbyist storage applications.