A revision surgery was performed for a conversion from anatomic to reverse configuration due to rotator cuff failure.A size 41 head along with the double cone taper and the glenoid poly were explanted.A 24mm glenoid baseplate, 36 mm glenosphere, 135/145 humeral cup size 36/+ 3, locking screws size 20mm & 30 mm and a standard screw size 30 mm were implanted.