ACB518K Bicycle Headset Bearing 40x51.8x8mm 36/45 Degree Balls Bike 1-1/2 Inch Headset Repair Parts Ball Bearings (2Pcs)

• DIMENSIONS: 40 mm inner diameter, 51.8 mm outer diameter, 8 mm thickness. and 1 Pack with 2 bearings.
• GREASE:They are characterized by excellent water resistance and load-carrying properties and help provide long-term protection against rust and corrosion.
• Sealed ACB:Featuring highly polishes races, angled chamfer areasand high grade balls, We contact bearings come in a variety of sizes and grades, These bearings slip fit into headset cups or head tubes.
• Bearing CareTo prolong the life of your bearings, do not direct a high jet of water near areas of your bike where there bearings are located - an ingress of water can lead to premature bearing failure.
• 52100 Chrome Steel，Pre-lubricated,Suitable for Most Bikes.

Inner x Outer x Depth (mm): 40 x 51.8 x 8 Angle / Chamfer (Deg): 36 / 45 Bearing ID: 40mm Bearing OD: 51.8mm Bearing Thickness: 8mm Internal Angle: 36 Degrees External Angle: 45 Degrees Material: Bearing Steel Seal: Double-sealed 2RS Material: Chrome Steel Cage Material: Nylon PA66