Insert the key into the keyhole and turn it to release the shackle, then place the shackle through the items you wish to lock.

Push the shackle back into the lock body until it clicks, remove the key, and pull on the shackle to ensure it is securely locked.

A 40mm iron padlock can be repurposed for various tasks, such as:

1. Securing Storage Bins: Use it to lock storage bins or containers to keep their contents safe.
2. Gym Locker: Employ it to secure a gym locker, ensuring your belongings are protected while you work out.
3. Outdoor Shed: Utilize it to lock outdoor sheds or garden gates, providing extra security for your tools and equipment.