I have my bikes in my storage area and locked up with a heavy duty chain. Recently it was broken into but nothing taken, mainly due to my bikes being chained. As an extra precaution I have two of these and can lock my bikes together in two areas and also use these when riding. It is heavy and seems really solid and the price is great.  It will take some effort to get through this and I made sure there is no wiggle room so basically these thieves would ruin the bikes trying to break or saw this off.