Protected Shackle from Bolt Cutters Heavy duty combination disc padlock is protected from threats of bolts cutters and other intrusive tools because of its unique shape and design. The design allows this discus padlock to be protected while easily fitting on most applications. Keyless Access Combination disc padlocks provide the peace of mind of not having to carry around keys. Very easy to use and no keys or special pins needed to change the code. With over 10,000 possible combinations, keep intruders locked out of belongings knowing they are secure. Applications The discus security lock is great for storage facilities, public facilities, gates, bikes, and more! Just set the combination, write it down so you don't forget, lock it, and the combination disc lock will do the rest!