The specifications of this product are:

Nitrile O-ring 505mm (black)

Black nitrile rubber O-ring 6.5 * 1.5mm (50pcs)

Black nitrile rubber O-ring 7 * 1.5mm (50pcs)

Black nitrile rubber O-ring 8 * 1.5mm (50pcs)

Black nitrile rubber O-ring 9 * 1.5mm (50pcs)

Black nitrile rubber O-ring 10 * 1.5mm (50pcs)

Black nitrile rubber O-ring 11 * 1.5mm (50pcs)

Black nitrile rubber O-ring 12 * 1.5mm (50pcs)

Black nitrile rubber O-ring 13 * 1.5mm (50pcs)

Black nitrile rubber O-ring 14 * 1.5mm (30pcs)

Black nitrile rubber O-ring 15 * 1.5mm (30pcs)

Black nitrile rubber O-ring 16 * 1.5mm (30pcs)

Black nitrile rubber O-ring 17 * 2.4mm (20pcs)

Black nitrile rubber O-ring 18 * 2.4mm (20pcs)

Black nitrile rubber O-ring 19 * 2.4mm (20pcs)

Black nitrile rubber O-ring 20 * 2.4mm (20pcs)

Black nitrile rubber O-ring 21 * 2.4mm (20pcs)

Black nitrile rubber O-ring 22 * 2.4mm (20pcs)

Black nitrile rubber O-ring 23 * 2.4mm (20pcs)

Black nitrile rubber O-ring 24 * 2.4mm (20pcs)

Black nitrile rubber O-ring 25 * 3.1mm (10pcs)

Black nitrile rubber O-ring 26 * 3.1mm (10pcs)

Black nitrile rubber O-ring 27 * 3.1mm (10pcs)

Black nitrile rubber O-ring 28 * 3.1mm (10pcs)