Chemistry Hippie | 50 Micron Pressing Screens 6-pack | Essential Oil Concentrate Press Filter | Ultra Strong 5x5 Inch Sheets | Also Available in 25, 100, and 150 Micron Screens The Easiest Most Affordable Way to Produce Super Clean Extracts: A Necessity if You Want Clean Oil Extremely Durable and Long Lasting. Thin Fabric but Very Strong: No More Leaks or Blowouts. No Tears Washable and Reusable. Cleaning is Very Simple. Eco-Friendly Solutions for the Extraction of Essential Oils. Chemical Resistant and Durable under High Temperature (up to boiling temp)