I bought this to use on a hitch style bike rack with no locking capability. This product is great as I don't need to carry another key with me, I can simply unlock with a quick combo. I use this lock when taking my bike and the wife's bike downtown where we wouldn't really leave them unattended for long periods. We might run in to a gas station or eat lunch and not worry about the bikes but I WOULD NOT RECOMMEND THIS FOR LONG TERM OR OVERNIGHT USE but then again if you bought this to use overnight I'm not sure you're being fair to the intended use of this product. Product is perfect for short term bicycle or other item needs.