The Lucca X58 is the latest E61 heat exchanger with a vibration pump and PID with built in shot timer engineered and manufactured by Quick Mill. On the front, there are two separate pressure gauges, one for steam and one for brew. Joysticks are used for the steam and hot water regulation to the no burn, insulated arms. The insulated stainless steel boiler holds 1.8 liters of water. The removable reservoir has a capacity of 2.5 liters. The stainless steel drip tray is also removable and holds 1 liter.