* 300-grade retainer bearing kit for headset and bottom bracket service* Includes durable plastic storage box* 120 pieces:BALLRET 5/32x16 x 8 BALLRET 5/32x20 x 24 BALLRET 5/32x22 x 8 BALLRET 3/16x7 x 8 BALLRET 3/16x15 x 8 BALLRET 1/4x7 x 16 BALLRET 1/4x9 x 12 BALLRET 5/16x9 x 16 BALLRET 5/16x10 x 16 BALLRET 5/16x12 x 4