Review on Enhance Your RV with RV Designer E401 Exterior Hardware by James Naylor

I have purchased three (3) of these sets and am now purchasing another one. I remove the glass tubes and only use them when I need to park my trailer. The rest of the time I leave the glass level in the RV or in my house so I don't break it. With all the problems these spirit levels have, it would be nice to be able to buy a replacement glass spirit level in bulk and easily replace it if it breaks. which happens frequently and in a very short time. PROS: They really work GREAT! VERY quick, easy to level my caravan with. : POOR CONSTRUCTION/NOT QUALITY - for the height of the glass bubbles, THEY DO NOT WATER AT ALL (if installed OUTSIDE the caravan!) - The sun heats the bubbler tubes and they break - They can vibrate while the trailer is being towed NEED FREQUENT REPLACEMENT