Buy miniature bearings.
696 - 1950pcs. size 6x15x5
695 - 650pcs. size 5x13x4
693 - 650pcs. size 3x8x3
No 2RS , no ZZ. Only open. Only steel.
Brand good China. Price 0,17$/1pcs.
Quality and accuracy of P6 or P5 bearings,
low noise and vibration Z2V2