Park Tool Professional Chain Scrubber Machine. Features: A shop quality version of the CM-5.2 chain cleaner Features a super tough die cast aluminum case and handle plus a unique brush/sponge replacement cartridge that makes it easy to keep it running smoothly and working properly Dual sided sponges and wicking pads help reduce drips Locking cover with stainless steel hinge pins 100% serviceable; See PK-8304 for CM-25 rebuild kit Specs: Description: professional chain scrubber machine, CM-25