OMS O-ring kit with approx. 235 O-rings in 16 sizes. The OMS O-rings are delivered in a sturdy box.
 Each compartment has a size indication. Two O-ring tools are supplied to remove and reposition the O-rings from the diving cylinder valves, regulators, defective O rings from diving hoses and pressure gauges (swivel).

 O-ring material: NBR and Viton