These tomato clips have teeth for increased grip. They also feature a quick-release design. They measure 25 mm (1-inch) in diameter. Each box contains 250 clips.These clips provide a fast and easy way to connect tomato plants to trellis twine. They also work well for cucumbers and other vining crops. For maximum efficiency, use in tandem with our Rollerhooks or Tomato Hooks.The teeth on these clips ensure that they do not slide along the trellis twine. The quick release feature allows you to move them with relative ease. You can also save them for your next growing season to save some cash!