Material: All our seed sprouting trays are made of rust-resistant, food-grade stainless steel.The seed sprouter tray has anti-rust function, which is safer and more than plastic seed sprouter tray. Easy to Use: This hydroponic wheatgrass growing tray is easy for anyone to operate. Simply soak the seeds, rinse, drain, and then move the germination tray to direct sunlight. Normal seeds germinate easily within 3 to 5 days. Enjoy Organic Healthy Living: You can enjoy fresh organic broccoli sprouts in salads, sandwiches, soups, stir fries, and wraps. Sprouting jars make it safe for you and your family to eat and develop your children's hands-on science skills and experience the fun of participating in planting. Fine Hole Design: The sprouting planting kit has an fine hole design, meaning the seeds won't stick and become rotten, but water passes through easily. This sprouting rack can also be used for washing dishes, fruit or vegetables. Multipurpose:Seed Sprouting tray is not only for growing peas, soybeans, mung beans, buckwheat and wheat grass, but also an essential tool for the home kitchen.