Sage The Puck Sucker is a no knock, no fuss and no mess solution for cleaning your used coffee grounds from your porta filter. Compatible with 58mm porta filters, the automatic suction cup creates a rapid vacuum, this quietly releases the used espresso coffee puck from the porta filter in one swift action. The puck sucker has a quick release lid which allows the disposal of the coffee waste quickly and easily. The tritan container is dishwasher safe for easy and convenient cleaning. The Puck Sucker has non-slip rubber feet for stability and safety when in use. Complete with a 9V battery.