PTFE Disk Filters, NO Prefilter, 0.22 um, 50mm, stepped barb: 5/16 to 1/2, Nonsterile, 10 per pack, DF15274-NP Regular Price $46.79 Price $40.68 Add to Cart PTFE Disk Filters, 0.22 um, 50mm, 5/16 to 1/2 SB, Nonsterile, no labeling, not individually wrapped, double-bagged, 100/pk, DF15274-NL Regular Price $437.85 Price $376.83 Add to Cart