Features:
This 279 pieces assorted O-ring set is perfect for automotive, commercial and hydraulic use. 
Features with 18 kinds of the most used sizes to accommodate a wide variety of tasks. 
Constructed of premium rubber, these rings will resist heat, oil, gas, water and most silicone fluids and solvents. 
The o-rings come in a labeled and organized storage case which makes it easily to choose the correct size. 
This is a great o-ring set for any auto mechanics and machinists.

Specifications:
Condition: Brand new and high quality
Material: Rubber
Color: Black
Weight: 200g
O-Ring Size and Quantity: As the following picture shown

O-Ring Quantity Size(internal diameter * thickness)
20pcs 3 * 1.5mm
20pcs 4.4 * 2mm 
18pcs 5 * 2mm
23pcs 7 * 1.5mm
23pcs 10 * 1.5mm
23pcs 13 * 1.5mm
13pcs 19 * 2.5mm
14pcs 21 * 2.5mm
13pcs 22 * 2.5mm 
10pcs 18 * 3.5mm
10pcs 20 * 3.5mm
10pcs 22 * 3.5mm
14pcs 10 * 2.5mm
13pcs 11 * 2.5mm
14pcs 13 * 2.5mm
13pcs 14 * 2.5mm
14pcs 16 * 2.5mm
14pcs 18 * 2.5mm

Package Included:
1 * Kit of 279pcs O-Rings