Weave the flexible shackle through cramped spaces to secure multiple points with a single lock. These padlocks are a good choice for equipment that is awkward to lock, such as corner hasps and small tools. The shackle is flexible enough that you can tuck the lock body into tight areas, such as a circuit breaker cabinet. The more pins a lock has, the harder it is to force open. These padlocks have a pin-tumbler key locking mechanism that is difficult to pick. However, the shackle is thinner than a standard shackle, so it is easier to cut. Choose these locks if you need several locks that open with the same key.

Steel-body locks are stronger than aluminum-body locks. Braided steel shackles are stronger than braided stainless steel shackles. Padlocks with a bumper prevent the lock body from rattling and scratching nearby surfaces.