New Replacement Air Filter Screens (ONE PAIR SCREENS ONLY) FOR USE IN THE OSSA IRZ AIR BOX. SDR, PIONEER, WILDFIRE, PLONKER AND ALL OTHERS THAT USE THE IRZ AIR BOX. TECH NOTE: (YOU WILL NEED TO USE SOME KIND OF WATER PROOF GREESE (EG. BELLRAY) AROUND FILTER TO MADE A NICE AIR TIGHT FIT). MANUFACTOR AND SELLER MAKE NO CLAIMS AS TO THEIR FIT OR FUNCTION. SPECIFICATIONS MADE FROM 30+ YEAR OLD PARTS.  FOLLOW UNI-FILTERS RECOMMENDATIONS FOR CARE OF THE FILTER.