1-1/4" NPT HO Competition Dual Basket Swirl-Away Sea Strainer with Pressure Relief316L premium stainless steel construction. Cone shaped dual screen basket provides even greater straining area. Basket is removable for easy cleaning. O Ring sealed Lexan lid (not cheap plastic) Lid is removed by simple one hand grip knob. No wingnuts! Lid will withstand 100 PSI pressure spikes. Kit includes polished billet aluminum swirl lid cover! Dual 1 1 4" NPT inlets and outlets. 3 4" NPT pressure relief port. Kit includes pressure relief valve.