All Commando locks come with a pick and bump resistant security pin system that can feature up to 10 security pins, and Commando locks are key responsible - meaning the key stays in the lock until fully locked or open 180 degrees. With a rust-resistant black zinc coating and dual-hardened stainless steel, Commando locks can handle much more than your average wear and tear. Chamfered rivet holes prevent the lock from fracturing when they're chiseled and our steel-alloy shackle is far more cut-resistant than your average hardened steel.