Grower?s Edge? Twist Clip Vine Holders are a great way to support your plants while they grow. These flexible plastic clips secure your plants or vines to support system such as stakes or trellis. Easy to use and reusable. Grower?s Edge? Twist Clip Vine Holders come in two different sizes: small (0.75 in) and large (1 in) diameters. Sold in pack quantities only.