Single freewheel 18T – Sturmey Archer SFS30

15,27 
1/2" x 3/32" for narrow chain, BSC 1.37 x 24 tpi, 34,798 mm x 24 tpi, chrome plated

Single freewheel 17T – Sturmey Archer SFS30

15,27 
1/2" x 3/32" for narrow chain, BSC 1.37 x 24 tpi, 34,798 mm x 24 tpi, chrome plated

Single freewheel 20T – Sturmey Archer SFS30

15,27 
1/2" x 3/32" for narrow chain, BSC 1.37 x 24 tpi, 34,798 mm x 24 tpi, chrome plated