This lock features a 6-pin cylinder technology, which offers more than 20,000 unique key changes compared to the 4-pin industry standard.It is constructed from stainless steel and has a 9mm diameter shackle designed to limit exposure and resist bolt cutter attacks.The lock is engineered for both indoor and outdoor use, with welded seams to withstand various weather elements.This specific model is often utilized for securing storage units, containers, trailers, and gates. CASH ONLY. PICK UP ONLY.