Liebao Heavy Duty 50mm Padlock With 2 inch Shackle and 3 Keys (4 Pack) Includes 4 security locks with 3 keys for each lock Protects against versatile key, saw and drill Contains very hard Arsteel ball to pin the shackle and it is so strong that it cannot be pried by force The Hardened steel shackle cannot be cut by a saw When locked the shackle measures 2.25" long by 1.5" wide. Total lock size is 3.75" long by 2" wide