Material : Ceramic Model Number : 6702 CE Origin : Mainland China Certification : none Model Number : 6702 CE Bearing Material : Ceramic ZrO2 Ball Material : Ceramic ZrO2 Bearing Sizes : 15X21X4 mm Inner Diameter : 15 mm Out Diameter : 21 mm Width : 4mm Lubrication : Free Running Free Grease Bearing Type : Full Ceramic Bearing Application : Fishing Reel Bearing Characteristics : Running Smooth Welcome to Lingfeng Store