Oil drain connector for screwing into the oil pan The assembly consists in drilling a hole for the bolt, putting it through the oil pan and twisting the nut from the inside (of course with the use of o-rings included in the set) Thread: AN10 The kit includes: AN10 connector Nut 2 o-rings Purpose: oil system Oil drain connection for screwing into the oil pan The assembly consists in drilling a hole for the screw, putting the connector through the oil pan and screwing the cap from the inside (of course using the O-rings included in the set) Thread: AN10Set contains : AN10 connector cap 2 oringsDestiny: oil system & nbsp