4 SET SPROUTING KIT: Includes 4 set mason jar strainer lids not including mason jars. The sprout lids allow you growing your own fresh sprouts at home. Excellent for sprouting broccoli, alfalfa, bean. SPROUTING LIDS SIZES: Net about 2.67"/68mm in diameter, 1mm thick, round: 2.91x0.63 inch(74x16mm), inner diameter: 2.64"/68mm, hole: 2.22"/56.5mm. PREMIUM MATERIAL: Seeds sprouting lids are made of 100% food grade 304 stainless steel, dishwasher safe. Perfect for making organic sprouts in your home or kitchen and supply fresh sprouting constantly. UNIQUE DESIGN: The unique fine mesh sprouting lids and sprouting stands give your sprouts excellent flushing, drainage and airflow. Make sure your germination experience is at its best. WIDE APPLICATION: The bean sprouts cover is suitable for growing all sprouts, including broccoli, alfalfa sprouts, Salad Sprouts, kale sprouts, cabbage, radish sprouts, broccoli sprouts, lentil sprouts,beans, etc. Grow bean sprouts and other vegetables at home, experience the fun of planting through the germination cover, accompany your family to grow up happily together.