ML3008 is an Open Miniature Ball Bearing, ML3008 Bearing has an inner diameter of 3mm, ML3008 small Bearing outer diameter is 8mm and ML3008 Bearing width is 2.5mm, ML3008 Bearing is made of Chrome Steel, 52100 is a high carbon, chromium containing low alloy steel, heat treatment and hardening of 52100 alloy steels will get you 60 Rockwell hardness and very common in bearings.

• Item: ML3008 Bearing
• Type: Radial Small Bearing
• Closures: Open
• ML3008 Dimensions: 3mm x 8mm x 2.5mm
• Size: 3 x 8 x 2.5 mm (3x8x2.5)
• Material: 52100 Chrome Steel
• Bearing Inner Diameter: 3mm
• Bearing Outer Diameter: 8mm
• Bearing Width: 2.5mm
• Standard: Metric
• Quality: Standard Precision
• Quantity: One Bearing