The Leifheit 52052 Set "Clean Twist Mop with trolley" was delivered to me without the subfloor, or roll paper. At Leifheit no final seems to be carried out. My last board was defective from the outset, wiggling without end. At higher loads it had also completely bent, so that I could dispose of it. The trolley is no exception and can not be without the rollers used as trolley. The first contact via the online form on the website of the manufacturer went without success. However, the second attempt does not. It apologized for the long wait and sent me without hesitation the missing role essay. The Clean Twist Mop System is really great and the perfect system for every household with parquet, laminate, cork and tiles. You come in every corner and gets everything spick and span clean. The apartment boasts what more could you want. The car can be moved much better thanks to the rollers and is easier to handle than my old system. The product I am absolutely satisfied.