DABPRESS Rosin Filter Bulk Pack of 2x4.5" ( 90 Micron ) Rosin Filter Bags 40pc Per Pack - Rosin Bags in Bulk Features: Affordable Bulk Pack - Including 40pc durable filter bags in a pack made of food-grade nylon screen. Flexible PETP Sheets - Including flexible PETP sheets for loading compressed products easier. Inside-out Filters - All filter bags are made of nylon mesh screen and pre-flipped to save time & ready to use. Prepress Mold for Pairing - Pair it well with a 30mm-plunger cylinder prepress mold or 2x4" rectangular pre-press mold. Specifications: 90 Micron Rosin Filter Bags Material: Heat-Resistant nylon mesh Width: 2″ ( 50.8 mm ) Length: 4.5″ ( 114.3 mm） 40pc Per Pack How to Avoid Filter Bags from Blowing out? Remove excess stems from flowers. Use less material in your filter bag. Preheating your material first to get it melty before you begin to apply pressure. Apply the pressure more slowly. How to Avoid Filter Bags from Blowing out? Remove excess stems from flowers. Use less material in your filter bag. Preheating your material first to get it melty before you begin to apply pressure. Apply the pressure more slowly. 1 - How to Use Dabpress Filter Bags 2 - How to Squeeze Flower Rosin and Mistakes to Avoid! 3 - Rosin Micron Filters 90um vs 120um vs 160um  about Yield!