Chainring for Bosch engines Generation 4 Performance Line CX pitch 1/2 x 3/32 and 1/2 x 11/128 38 teeth ESJOT chainring for Bosch engines Generation 4 (Performance Line CX), pitch 1/2 x 3/32 inch and 1/2 x 11/128 inch steel, black, KTL coated, material thickness 2.0 mm, inner toothtoothtoothtoothtoothtoothtooth6 wedges, 38 teeth