The 50 pack of large and small Vine Holders are 0.75" in diameter when closed (the Large Vine Holders 1" in diameter when closed). Ideally suited to gently hold your vines to their supports without damaging the plants. The 50 pack of large and small Vine Holders are 0.75" in diameter when closed (the Large Vine Holders 1" in diameter when closed). Ideally suited to gently hold your vines to their supports without damaging the plants.