Park Tool CM-25 Professional Chain Scrubber. The Park Tool CM-25 Professional Chain Scrubber is a shop quality cleaner built to give years of constant use.

• Proven chain scrubbing technology leaves chains sparkling clean
• Durable A380 aluminum die cast case and removable handle
• Dual sided sponges and wicking pads to help reduce drips
• Rotating brushes clean on all four sides of every link
• Brush and sponge cartridge quickly and easily clicks in and out
• Locking cover with stainless steel hinge pins
• Works with all multi-speed bikes (5 6 7 8 9 10 11 and 12-speed) and some single-speed models
• 100% serviceable