Annual Service kit for a Scuba Pro MK 10 first stage. This is NOT for a MK10 Plus first stage.
Make sure that you get a reputable service technician to service your regulators. Aqua Sport Scuba Center Inc takes no liability or responsibility for the service work done with the sale of any service kits. It's up to you to be a responsible adult and understand your risks and responsibilities. Training and experience is very important. Play safe !