Features: Bags are labeled and color coded to corresponding micron rating: Purple-25 micron, Yellow-73 micron, Red-160 micron, Blue-220 micron and a 20*20 pressing screen-25 micron. For using with 1-gallon buckets or tubs. Made of durable waterproof coated nylon material, with built-in flexible cord for binding the filled bag. The bag set including 4pcs of 1 gallon filter bags. Includes a storage bag to keep them organized and clean when not in use. Works well in extracting the oil from any herbs. Specifications: Material: Nylon Quantity: 4pcs Color: Purple, yellow, red, blue Micron Rating: 25, 73, 160, 220 Pressing Screen Size: 20 * 20cm / 7.87 * 7.87in Item Size: 29 * 15.5cm / 11.42 * 6.10in (H*D) Package Weight: 328g/ 11.60oz Package Size: 27 * 23 * 7cm / 10.63 * 9.06 * 2.76in Package List: 4 * Bag 1 * Pressing Screen 1 * Manual(English)