Spring Hardware Kit Holden 10 inch drum brake. Return springs and Hold Down springs and Pins.HK 1968 to 1969 HT 1969 to 1970HG 1970 to 1971HQ 1971 to 1973HJ 1974 to 1976HX 1976 to 1977HZ 1977 to 1979WB 1979 to 1981One kit services one axle (two wheels). All Years 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981