Contain 8 sizes, size included (Inside Diameter x Diameter):

6.07 x 1.78mm
7.65 x 1.78mm
10.82 x 1.78mm
12.42 x 1.78mm
14 x 1.78mm
6.8 x 1.9mm
10.8 x 2.4mm
13.8 x 2.4mm
Descriptions:

Assortment O-Rings with convenient resealable plastic case.
Total 8 most popular used O-ring sizes.
Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly Saturated Nitrile (HSN) is special class of nitrile rubber (NBR) and is for mission critical applications.
HNBR can be formulated to meet application temperatures ranging between -45 degrees C and 165 degrees C, and HNBR is classified by ASTM as DH-type polymer.
The HNBE O Ring can be bear the impact, bear the freon(F12, R123a), bear the oil, and watertightness, defendtheultravioletray, bear the corrosion.

Packing list:
320 Pcs ±2% x Air Conditioning O Ring