surepromise Toilet Seat Fixings Top Fix Universal Pack Well Nut Wc Blind Hole Fitting Rubber Back to Wall Pair 100% Brand New Toilet Seat Top Fix Hinge Pack. Replacement For Back To Wall Or Wall Hung Toilet Pans. Great For Broken Or Old Toilet Seat Hinges. Fits For Most Standard Toilet Seats With Top Fix Hinge. Screw Length: 45Mm; Black Rubber Fixing: 40Mm.