Shop kit of bearing retainers for loose-ball headsets, hubs and bottom brackets. - Bottom bracket: 1/4x9=12; 5/16x9=16 (#64); 5/16x10=16 (#66), 5/16 x 12 (Qty 4) - Bearing retainer assortment in all the popular sizes for headsets, hubs, and bottom brackets; includes plastic organizer - Hubs: 3/16x7=8; 1/4x7=16 - Headset: 5/32x22=8; 5/32x16=8; 3/16x16=8; 5/32x20=24