New Racing Power Company oil pan drain plug.  Magnetic tip allows for easier inspection of metal in the system and can prevent damage from larger particles.  Plug is 1/2"-20 thread, with nylon washer and magnetic tip.  Fits the following:

67-79 Firebird/Trans Am with 326/350/400/455 (Pontiac engine)

67-81 Camaro w/ 305/350 (Chevrolet engine)