Looked everywhere for a great wall mount wine rack solution.  This ended up being exactly what we wanted.  Better than a riddling rack, better than the other cheap solutions out there--rock solid once installed.  We used a self tapping toggle bolt for the top hole and standard #8 screws/anchors for the other holes.  We're buying more of them from Wayfair to finish out our new wine rack system (5 total racks).  As an FYI, each rack plus bottle length takes up 13" of space, so take the space you are looking to fill and divide it by 13" to figure out the number of racks to order.