The handheld oil filling gun is a simple and lightweight tool specifically designed for customers with small-scale oil filling needs. It consists of a temperature control box and an oil heated gun. The control box supports 110V-240V power and manages functions like heating on and off and temperature settings, while the oil-heated gun ensures efficient and consistent filling. Its transparent barrel provides a clear view of oil levels, and the flow adjustment knob offers precise dispensing control. Additionally, FillHand offers lifetime online support and free accessories to enhance your experience.