We actually bought two of these.  One for us and one for a friend.  My friends was fine, but our box had a tear in it.  We discovered that all of the bolts were missing.  I went to customer service and looked for a way to order and purchase a new set.  I bought the item with an open box, so I figured it was my fault for not double checking.  I received an email the next business day stating that they shipped all new bolts for free.  Wow!  Not what I was expecting.  They were wonderful!!