Each filter element is made from surgical grade stainless steel mesh, providing unmatched protection against oil contamination and resultant motor damage. One square inch flows 1.9 gallons of oil per minute at only (1) psi. A nickel plated neodymium rare earth magnet is attached to the top of each element for magnetic pre-filtering of oil. The unique twist lock allows for easy disassembly, inspection and cleaning. Also, the quad-ring gasket doubles the seal between the oil filter and motor. Each oil filter housing is carved out of billet aluminum which dissipates heat well and looks trick!