Shimano Stradic Main Shaft Ball Bearing Kit 19 Stradic.
Fits 1000 - 2500 - C3000 - 3000 size.
Inner 4mm; outer 8mm.
Combined shipping when buying Stainless Steel Made in Japan bearings:
2x5x2.5mm 3x6x2.5mm 4x7x2.5mm 5x8x2.5mm 6x10x3mm 4x9x4mm 5x9x3mm 4x8x3mm 7x11x3mm 7x13x4mm 7x14x5mm 8x16x5mm 8x14x4mm 8x12x3.5mm 7x11x2.5mm 6x10x2.5mm 3x6x2mm 4x7x2mm