The LUCCA flow control device is compatible with any E61 espresso machine. While most flow control kits are chrome-plated brass, the LUCCA flow control device and included mushroom and spindle are constructed out of stainless steel for increased longevity and performance. Included are simple installation instructions. Tools needed for installation are Teflon tape, electrical tape, a 5mm Allen key, and a 12” adjustable wrench.