Park Tool 450 Machine Thread Hook If you are anything like us, you have too many bikes in your garage. A great way to make room for more is to hang them up from ceiling. The Park Tool 450 Machine Thread Hooks are designed to do just that and will fit a standard sized mountain bike or road wheel. With 44mm length of machine thread and a scratch preventing vinyl coating, you'll be storing those bikes with no porblem at all. Features Vinyl coated Machine thread with two nuts Manufacturer's Part No: 450 UPC: 763477008992 | Park Tool 450 MacHine Thread Hook Blue, with Nuts