FSA Angular Contact Bearing TH-070RPlease check precise measurements against the below to determine the correct size. SPECIFICATIONS STEERER DIAMETER: 1 1 2" OUTER DIAMETER: 52mm INNER DIAMETER: 40mm HEIGHT: 7mm CHAMFER ANGLES: 45 45 TH 070E Chrome steel balls and races TH 070S Stainless balls and races TH 070R Alloy outer race, chrome steel balls and inner race Also known as part code MR 170. Black Bearing equivalent is bearing D2