My Plumber was called out to one apartment and in that apartment the kitchen drain had a stoppage. While there the unit above the unit My Plumber is working in kitchen drain had a stoppage too. In the bottom unit the K 50 was used the clear the stoppage. 14 feet of cable went down the drain to clear the stoppage. The stoppage was cleared at 4 feet. Ran hot water to show that there is no more stoppage, and to clear any loss Debris. The same issue in the unit up stairs. The stoppage will be cleared with the K 50. 14 feet of cable went down the drain. The stoppage was cleared at 9 feet. Ran hot water to show no more stoppage and clear any loss debris .