Marpac Qwick View Water Separating Filter System - Nichronium Head & Filter Assembly Kit With DrainMarpac Qwick View Filter System with Drain Quick View is a new concept in fuel filtration, just replace the part that needs replacing. Quick Drain casing includes an easy turn thumb screw for quick, convenient water drainage (Except 7 6856) and a red float that indicates water that needs to be drained. Clear bowl on all Quick View allow for quick checks on fuel quality, remove water or change filter before there is a problem. 10 Micron filter