I tried to connect a hose that I used before but it did not enter because the bore size of the plug was the same as 15 mm hose. When trying to purchase 18 mm hose at home center, it was slightly too thick and tightened with the attached stopper fitting to prevent water leakage. However, this time it became a fuss to buy a connection adapter and a shower because the diameter of the water spray shower parts did not match. If you think backwards, probably because the conventional hose did not stretch and stretched it was not possible to enter if it was a new article of 15 mm hose it was a judgment mistake or whether the caliber of the reel was a defective product I did not understand well. It will be appreciated if you can add a statement that the hose is sometimes not entered in the instruction manual. I like the reels themselves and they are easy to rotate and I like it.