Each size is clearly organized in a durable plastic box, allowing for easy identification and access. 15 Sizes of 304 Stainless Bicycle Bearing Balls. Includes 15 sizes of bearing balls: 1mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, and 10mm.
