Upper Fit: IS42/28.6 (45° x 45° ACB). Lower Fit: IS52/40 (36° x 45° ACB). FSA Integrated Headset No.42/48/ACB 1.1/8 - 1.5"" 42.0/52.0mm Black. Headset Type: Integrated. Colour: Black. Model: No.42/48/ACB.
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