Headset bearing, 34.1x46.8x7 mm (45x45o) This size bearing is also known in the bike Industry by these part numbers: MR168, 970S, IS46, IS46/34, TH MR082
Headset bearing, 40 x 52 x 6.5 mm, (36x45o) This size bearing is also known in the bike Industry by these part numbers: HD 1404K, BAA0006K, MR-127, MR-196, MH-P25K, BAA1132, TH MR019
