Full ceramic:This ball bearing is made of ceramic ZrO2 and PTFE material, features high precision, high speed, and wear small. Design:This is a sealed ball bearing, with good dustproof effect, resistant to and able to operate in harsh conditions,low power consumption,Small frictional resistance, low power consumption, high mechanical efficiency Versatility: High speed bearing make you cast longer and faster Easy Installation : The compact integrated corrosion resistant stainless steel construction allows for quick press fit installation into tight spaces without the need for fastening hardware or bonding agents. Superb Performance : The meticulous hand-finishing and quality craftsmanship provide virtually frictionless, vibration-free and whisper-quiet spinning, making this bearing the smart choice for the most critical industrial equipment where failure is never an acceptable option., Manufacturer: SOYWIM