Mallory 85551M Promaster Street/Strip Distributor for Chevrolet V-8 Engine Economically priced street or strip coil - the Promaster series CNC machined billet 6061-T6 aluminum housing Centerless ground shaft with welded pins and a plated assembly with nylon rub pads Steel distributor gear compatible with flat tappet or hydraulic roller camshaft Cap and rotor and wire retainer included