The STP GST00089EN is a reusable trigger dispenser and gauge that is designed to measure the pressure and refrigerant level in your A/C system. It is compatible with all R134a refrigerant cans and is easy to use. To use the STP GST00089EN, simply attach it to an R134a refrigerant can and connect it to the low-pressure port on your car's air conditioning system. Then, turn on the gun and watch the gauge as you charge the system. When the desired pressure is reached, turn off the gun and disconnect it from the system.

The STP GST00089EN is a great tool for anyone who needs to recharge their car's air conditioning system. It is easy to use, accurate, and durable. If you are looking for a reusable trigger dispenser and gauge, the STP GST00089EN is a great option.

Here are some of the features and benefits of the STP GST00089EN:

• Reusable
• Accurate
• Durable
• Easy to use
• Compatible with all R134a refrigerant cans

If you are looking for a reusable trigger dispenser and gauge, the STP GST00089EN is a great option. It is easy to use, accurate, and durable.

Here are some additional tips for using the STP GST00089EN:

• Make sure that the refrigerant can is compatible with your car's air conditioning system.
• Read the instructions on the refrigerant can carefully before using it.
• Do not overfill the air conditioning system.
• If you are not comfortable using the STP GST00089EN, take your car to a qualified mechanic.