PROFESSIONALLY CONVERTED 50 LITER STAINLESS STEEL KEG IT HAS A JFW BALL VALVE WELDED AT A SLIGHT DOWNWARD ANGLE TO THE VERY BOTTOM OF THE KEG. THE THERMOMETER READS TO 250 DEGREES F. IT IS ABLE TO BE CALIBRATED BY TURNING THE SCREW ON THE BACK OF THE UNIT. THE HOLE IS SET IN THE BOTTOM OF THE KEG SO A MESH SCREEN CAN BE PUT IN TO USE IT AS A MASH/LAUTER TUN.CALL OR EMAIL ME,I WILL GET BACK TO YOU.