Park Tool Pro Chain Cleaner CM-25The Park Tool Pro Chain Cleaner CM-25 has a rugged exterior and brings to you the wonderful design that has been used year after year. The outside is made of A380 Aluminum with a removable handle. There are dual sided sponges and wicking pads to aid in preventing dripping residue. There are rotating brushes clean on all four sides of every link. The brush and sponge cartridge very easily click in and out. The locking cover has stainless steel hinge bolts. Drip or Immersion application option. 100% Serviceable.763477001917