Here's the description from the website:
Get a two pack of the top rated / best selling bicycle hoist on the market! There is no such thing as not enough room for another bike. Store your bikes overhead and out of the way. Smooth pulleys and latches make lifting even heavy bikes super easy. The exclusive rope locking mechanism prevents unwanted release and can suspend one bike - 100 lb. load limit. Please note, you can mount this item as pictured or on a 2 x 4 and then onto the ceiling.
I'm in for 1! Wootbot posted this before but at a higher price.