Their uniform micron openings allow the filtering of debris. 005 in. or larger. Snug and secure, Keep dust, dirt, and debris out of your air intake system with these Injen Hydro Shield prefilters. INJEN HYDRO SHIELD WATER REPELLANT PRE-FILTER FOR INJEN X-1012, X-1013, X-1014, X-1015 FILTER.
