Regarding to the old type handpiece tube, the connector is fixed with the control panel. When a dentist wants to change the old handpiece tube into the new one, they have to ask for the technician service. Dentists have to stop the operations of the dental unit during the on-site technician service, by which their business will be influenced. I. We can do some improvement to solve this problem. Here is our solution: equipped with the quick connector handpiece tube. II. Detailed descriptions and photos of the quick connector handpiece tube. III. What's the connector on the dental unti looks like when it doesn't connect with the handpiece tube? The picture is as below. IV. Benefit: 1. To distributors, the frequency of sending technicians to change the handpiece tube for dentist will be decrease. So the human source and time can be saved. What's more, the maintenance cost can be reduced. 2. To dentists, they don't have to stop the operations of dental units, they can change the handpiece tube by themselves in a short time, so that their clinic business won't be influenced. Welcome to watch the process of the inspection from our video on Youtube: https://www.youtube.com/watch?v=bjrhWnPfIIA If you have any advices about our inspection procedure, please feel free to let us know.