10 bearings Wheel Ball Bearings for many applications, this is a popular size that could be used in many RC Cars and Trucks, or any application that uses this size 4mm x 9mm x 2.5mm. Bearing is made of Chrome Steel.

• Size: 4mm x 9mm x 2.5mm
• Type: Deep groove ball bearings
• Closures: Open
• Quantity: 10 Bearings
• Dynamic load rating Cr: 640 N
• Static load rating Cor: 230 N
• Limiting Speed:
  • Grease Lubrication: 59,000 RPM
  • Oil Lubrication: 70,000 RPM
• Packing: 10 bearings in 1 plastic tube
• Equal: 618/4