Product Name: Rubber O RingMaterial: nitrile rubber (NBR)Weight: 28 gInner diameter: 150 mmOuter diameter: 160 mmThickness: 5 mmColor: BlackPackage Contents: 2 x Nitrile Rubber O RingsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
