Set of 8 full ceramic skate bearings that work in high speed skate applications like skateboards, inline skate, rollerblades, roller hockey, and even the 8mm quad rollers, these bearings can be used inline skate, rollerblade and roller hockey. These bearings use for racing and competitions, this set has 8 bearings for skateboards, there is no steel/ferrous mateial in these ball bearings.

• Item: 608 skate bearings Pack
• Type: Full Ceramic
• Inner/outer races: ZrO2 (zirconium oxide) Ceramic (White color)
• Balls: Si3n4 (silicon nitride) Ceramic (Black COlor)
• Cage: PTFE
• Closures: Open
• Inner Diameter: 8mm
• Outer Diameter: 22mm
• Width: 7mm
• Size: 8mm x 22mm x 7mm
• Highest Temperature: 356 (degrees fahrenheit)=180 (degrees Celsius)
• Quantity: Set of 8 Bearings