The Einhell R 1/4 inch combined maintenance unit with oiler for compressed air tools is designed for the maintenance and maintenance of compressed air tools in the workshop and garage. This includes the function of a filter pressure reducer. In addition, oil can be added. Compressed air tools such as the pneumatic impact wrench require oil to protect the internal mechanical components. The compressed air tool oil is filled into the sight glass of the oil. The R 1/4 in. Combined maintenance unit allows precise control of the oil addition. A pressure gauge for regulating the operating pressure is integrated. The input pressure is a maximum of 10 bar, the adjustable pressure range up to 8 bar. The R 1/4 inch combined maintenance unit with Einhell oiler is ideal for feeding clean, dry and regulated compressed air. Regulated pressure is required for many compressed air tools that can only be operated correctly with a certain amount of compressed air. In addition, the combined maintenance un