Fiber reverse disc.
NLA Bolens part # 1706376
These were used on the following Tractors:
21HD-01 (1957) (Ride-a-Matic)
220-01 (1958) (Ride-a-Matic)
230-01 (1959) (Ride-a-Matic)
231-01 (1960) (Ride-a-Matic)
232-01 (1960) (Ride-a-Matic)
15FH-01 (Versa-Matic walking tractor)
155-01 (Versa-Matic walking tractor)
These Also fit a select few of the small riding tractors from the 60's with versa-matic drive
