5/8 hex with 3/16 and 7/32 T-handle allen wrenches. Makes setting valve lash much easier by combining two wrenches into one! With one hand you can loosen the lock not or poly lock and adjust the lash while holding the feeler gauge in the other. Once set you can use the T-handled Allen wrench to lock down the setting.
1947 (47), 1948 (48), 1949 (49), 1950 (50), 1951 (51), 1952 (52), 1953 (53), 1954 (54), 1955 (55), 1956 (56), 1957 (57), 1958 (58), 1959 (59), 1960 (60), 1961 (61), 1962 (62), 1963 (63), 1964 (64), 1965 (65), 1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73), 1974 (74), 1975 (75), 1976 (76), 1977 (77), 1978 (78), 1979 (79), 1980 (80), 1981 (81), 1982 (82), 1983 (83), 1984 (84), 1985 (85), 1986 (86), 1987 (87), 1988 (88), 1989 (89), 1990 (90), 1991 (91), 1992 (92), 1993 (93), 1994 (94), 1995 (95), 1996 (96), 1997 (97), 1998 (98)NPD Part Number : 926-5B Manufacturer Reference #'s: 66781,
1965-1973 MUSTANG
1979-2004 MUSTANG
1967-1973 COUGAR
1955-1957 TBIRD
1948-1979 F1-F350
1980-1996 F100-F350
1997-2004 F150-F350
1966-1996 BRONCO
1967-1981 CAMARO
1964-1987 CHEVELLE
1967-1981 FIREBIRD
1962-1979 NOVA
1964-1972 TEMPEST GTO, TEMPEST, LEMANS
1947-1998 CHEVY TRUCK
1964-1988 CUTLASS
1964-1972 SKYLARK
1960-1976 MOPAR
1983-2004 R/B/E/M
1960-1970 FALCON (BEFORE 1/1/70)
1970-1970 FALCON (FROM 1/1/70)
1968-1971 TORINO
1964-1970 FAIRLANE
WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.