U.301E1 tip for pullers U.301, U.302, U.301-150, U.302-150. - Female thread: 1/2" - 20UNF. - Male thread: M12 x 1.75. U.301E2 tip for pullers U.301-200 and U.302-200. - Female thread: 1/2" - 20UNF. - Male thread: M16 x 2.00. Locks the legs in Pullers position.