ProFilter Premium Oil Filters feature M-Pleat technology, a structural paper design allowing for larger filtration area and greater capacity to hold contaminants, extending filter life by 20-30%. Spin-On Filters - Silicone Anti-Drain Back Valve to allow optimum oil pressure to be obtained quickly, reducing the time for oil to reach critical areas at start-up. 17 MM Hex Wrench Removal Nut come standard for easy removal and pre-drilled for safety wiring. 100% Leak tested. Pre-lubricated gasket to ensure optimum seal to the engine.