positioned on the pipe 130 or the shaft 120 this requires a long assembly time and costs a large amount of money however the present invention has solved these problems fig1 is a sectional view partially showing a slip joint according to the fourth and fifth embodiments of the present invention the slip joint includes a pipe 130 a shaft 120 a slipper 700 a latching portion 800 a latching portion groove 900 and a step 1105 in the drawing reference numeral 1115 refers to the inner diameter of the latching portion 800 and 1110 refers to the outer diameter of the step 1105 fig1 shows in detail the slipper 700 shown in fig1 when fixed to the shaft 120 the latching portion 800 protrudes from an end of the slipper 700 towards the center of the shaft 120 which is provided with a latching portion groove 900 so that the latching portion 800 is seated thereon the step 1105 is positioned on the shaft 120 to the right of the latching portion groove 900 the distance between the upper end of the step 1105 and the center of the shaft 120 is defined as the outer diameter 1105 of the step 1105 and the distance between the lower end of the latching portion 800 and the center of the shaft 120 is defined as the inner diameter 1115 of the latching portion 800.