The Shinko 712 cruiser / touring tire set. These are great tires at a very reasonable price.

Features:
Designed for mileage and performance
Staggered tread pattern provides excellent wet weather performance
4 ply nylon carcass
Front Tire - 19 - 57H (S rated with tubes)
Rear Tire - 18 - 61H (S rated with tubes)

Fits Honda:
CL350K Scrambler - 1968-1973 (original tire sizes were 3.00 Front / 3.50 rear these tires are wider)
SL350K Motosport - 1969-1971
CB400A Hondamatic - 1978 (no rim strips required)
CB400T Hawk - 1980 (no rim strips required)
CB400T Hawk I - 1978-1979
CB400T Hawk II - 1978-1979 (no rim strips required)
CB450K - 1970-1974 (original rear tire was 3.50 this tire is wider)
CL450K Scrambler - 1968-1974 (original rear tire was 3.50 this tire is wider)
CB500K - 1971-1973 (original rear tire was 3.50 this tire is wider)
CB500T Twin DOHC - 1975-1976 (original rear tire was 3.75 this tire is slightly wider)
CB550F Super Sport - 1975-1977 (original rear tire was 3.75 this tire is slightly wider)
CB550K 1974-1978 (original rear tire was 3.75 this tire is slightly wider)
CB750F Super Sport - 1975-1978
CB750K - 1969-1976