A heavy pipe wrench with a handle, in which you really what has in hand to build a decent muscular torque. Stable processed, no drill chips or Restgrate. The tube is deep enough for each long sink screw. The negative I had: I underestimated the length (35cm) - because with the addition quite beefy grip I could only with my closely built sinks due to the size of the socket wrench the mother does not reach. I would actually drain pipe, and to dismantle the old Massivrohrzuläufe for hot and cold water, then I would have come to said mother. For those interested: Previously times with a thick stick taste, how to get to the parent. Featuring a 13 mother I have checked the accuracy and can say that the key accesses these exact fit and no play. For modern standard fittings and -Waschbecken and -küchenspülen with 13mm screw certainly the ideal solution for DIYer.
