1-1/2 Inch 38.1mm Double Sealed Bicycle Headset Bearing 40x51.8x8mm 36/45 Angular Contact Chrome Steel GCR15 With Rubber Seals Street Ready For Road, Mountain And BMX Riders Thin Section Bearing LR5204NPP Track Roller Double Row

LR5204NPP Track Roller Double Row Bearing

the NU306BNLS inner diameter is 30mm

Equal MRC 108KSFF

Size: 20 x 47 x 17 mm

KOYO: WML5009-2RS

1-1/2 Inch 38.1mm Double Sealed Bicycle Headset Bearing 40x51.8x8mm 36/45 Angular Contact Chrome Steel GCR15 With Rubber Seals Street Ready For Road, Mountain And BMX Riders Thin Section Bearing LR5204NPP Track Roller Double Row1 1 2 inch double sealed bicycle headset bearing 40x51. 8x8mm single bearing, 36 45 angle, chrome steel GCR15 seals This is a 1 1 2 inch bicycle headset bearing with double rubber seals, designed to fit standard front end headset assemblies on road and mountain bikes. It supports the steerer tube and ensures smooth turning. Bore: 40 mm Outer diameter: 51. 8 mm Width: 8 mm Angle: 36 45 degrees Material: Chrome steel GCR15 Seals: Rubber Quantity: 1