Male to Female Threaded Adapter used with #5405, #5407 & #5409 to extract dipstick tube, using any standard thread (5/8"-18 TPI) slide hammer tool. Also use at the end of Push Puller legs or forcing screws when pulling shafts, bearing caps, pinions, etc. Female End - 5/8"-18 TPI, Male End - 3/8"-16 TPI, Length - 2 1/4".