Product details:

TRITAN Sprocket 16BS12HX32, Metric, 1" Pitch, 32MM Finished Bore, 12 Teeth TRITAN Quality all steel Sprocket for Roller Chain. Features Black Oxide finish for corrosion resistance. Includes Keyway & 2 Set Screws. Teeth are hardened providing extra wear life, extending chain life and saving downtime and replacement cost. Conforms with ISO & British Standard BS228/15