Pack of 100 Loose 5/32" inch Tungsten Carbide Ball Bearings5/32" inch = 0.156" inch G25100 Loose BallsPack of 100 Loose 5/32" inch Tungsten Carbide Ball Bearings, Balls are made of tungsten carbide, Balls size is 5/32" inch (3.97mm), Grade is G25, And it meets grade 25 sphere tolerancem, Loose Ball is extremely hard alloy made from tungsten and carbon And it is high corrosion wear resistance.Item: 5/32" Loose BallsSize: 5/32"(0.156" inch)Grade: G25Hardness: 90 RockwellSphericity: 0.000025"Material: Tungsten CarbideQuantity: 100 Loose Balls