EEEkit Trellis clip is made of durable plastic, weather-resistant, and rot-proof. It has 4 hollows for airflow, a gap for string passing, and a quick-open design for easy use. Elastic and versatile with a 1.2" round hole, perfect for many plants with small stems or vines, such as tomatoes, watermelons, cantaloupe, melons, beans, cucumbers, grapes, pumpkins, and other flowers such as roses, orchids.