1. Perfect distribution of distances between seeds 2. Reasonable use of land space to maximize your harvest 3. Simple and easy to use in just 3 steps 4. Fits most 5-7 gallon grow bags and vegetable gardens (please make sure your grow bag is about 12 inches in diameter or larger) 5. Material: ABS 6. Size: about 30 x 2.5cm 7. Weight: square about 331g, round about 265g
