HED JET 50/60/90 - Sonic Front HUB Bicycle Ceramic Bearing Kit Outer Diameter - 70mm this is a popular size

this is a popular size that be used in many applications that uses this size 1/4" x 3/8" x 1/8" inch

1 1/4" x 2 1/4" x 3/8" inch

FITS: MRC THUNDER KING LARGER REAR WHEEL

62301-2RS Sealed Ball Bearing

HED JET 50/60/90 - Sonic Front HUB Bicycle Ceramic Bearing Kit Outer Diameter - 70mm this is a popular sizeHybrid Ceramic Deep Groove ball Bearings (steel rings with ceramic balls) Fits HED JET 50 60 90 Sonic Front HUB Bicycle Closures: Rubber Sealed Closure Side: Double Sided Seals Lubrication: Low Friction Grease Material: Corrosion Resistant Chrome Steel Balls: Low Friction Solid Ultra Light Ceramic Balls Brand: VXB Quantity: Set of two Bearings Location : Front Hub