ITEM NAME:50 pcs Sealing rings / O-ring, for automobiles, made of nitrile rubber, 6.5 I8D9 50 pcs Sealing rings / O-ring, for automobiles, made of nitrile rubber, 6.5 I8D9 Resistant to high and low temperatures, UV-resistant, ozone resistant, wear-resistant Applications: car, electrical devices, mechanical, industrial, construction, household, other areas Product Name: Ring material: nitrile rubber (NBR) number: 50 pieces outside diameter: 6.5 mm inner diameter, 3.5 mm Thickness 1.5 mm Color: Black weight: 3g Package Included: 50 x NBR O-rings 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 +/- 1-3 cm.