Headset bearing, 40x52x7 mm (45x45o) This size bearing is also known in the bike Industry by these part numbers: HSS 6011, BAA0695K, TH-070, MR-128, MH-P16, TH MR082

Headset bearing, 40.5x49.5x7 mm (45x45o) This size bearings also known in the bike Industry by part number: HSS 6011, ACB495H6.5

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

Headset bearing, 14.2x25x6.5 mm (45x45o) This size bearing is also known in the bike Industry by these part numbers: 307481, W 276442