I received the package as expected, everything was good. I ordered this roller as the coil of 18 m allowed me to do my 2 stairs. After 1, (this without difficulty, the product to air quality) I was amazed at the size remaining on the roll. So I took my meter and measured (2 times because I thought I was a mistake) but it was not that, it was to remain me 6.64m and in the end there was only 3.25m. Impossible to make my second staircase. Occasional mistake? Thank you Amazon who supported my problem.