The Vino Series Drywall Collar is the accessory that allows Vino Pins or Vino Rails to be installed direct to drywall, no backer needed. The 1/2″ (1.5cm) deep Collar supports the drywall by compressing it between itself and an inverted butterfly anchor. Wine racking can come up to 12-1/2″ (32cm) off the drywall with no risk for failure.