The kit comes with everything you need to mount a hydraulic fluid cooler and filter in your new Chinese mini excavator. 

The kit incldues;

1- hydraulic fluid cooler (25L/minute flow with 12 volt fan)

1- hydraulic filter

1- hydraulic filter assembly

2- 3/4" x 1/2" reducer

1- 1/2" 90 degree elbow

2- 1/2" x m14 - 1.5 fitting

3' long return line

The picture has a short hose, that is not the hose in the kit, it is indeed 3 feet long.