About this item

• Oil-free -lubricating, ceramic ball with oil-free -lubricating properties, so ceramic cannot grease
• Spindle Interface Type: , Hollowgram SI/SL/
• For Bike Type: Time Trial Triathalon, Cruiser, Cyclocross Bike, Dirt Jumper, Folding Bike, Mountain Bike, Recumbent Bike, Road Bike - , Road Bike - Touring, Bike, Bike, Tricycle, Unicycle, Urban Bike - Fixed .
• with high quality
• Insulation, rolling body with ceramic ball, you can achieve the between the inner and outer ring insulation