The Master Lock ProSeries® Brass 4 Digit Padlock is made from high-quality solid brass for superior corrosion resistance with an octagonal boron-carbide shackle for ultimate cut resistance. The resettable 4-digit lock has the possibility of over 10,000 combinations and the deadlocking mechanism protects against prying, shimming and rap attacks. The combination dials are extremely easy-to-use thanks to Master Lock's unique blind system, they're easy to turn even when you're using gloves or when light is poor. The lock is extremely sturdy thanks to the shackle seal and combination dial dust cover to protect internal integrity and protect against dirt and debris. The ProSeries® Padlock provides superior protection for gates, machinery and anywhere else that needs protection. Specification: Body W x H: 57 x 50mm Body Thickness: 31mm Shackle W x H: 24 x 27mm Shackle Thickness: 10mm Shackle: Open