15 X 3 Hydrama, Rectangle Center Outlet Pick-Up with -3/8 NPT Fitting.fitting Location Designed for Universal Use HolleyThe amazing HydraMat is Holley's patent pending design that solves the problems associated with traditional fuel pick ups in stock fuel tanks as well as racing fuel cells. During hard cornering, acceleration, stopping, inclines, and low fuel conditions fuel runs away from the fuel pick up which introduces air into the system resulting in poor engine performance and even stalling. HydraMat is the solution! Surface tension and fluid wicking are the