Challenger Lifts CLHM Disc Brake DollyChallenger Lifts CLHM 200 Disc Brake Dolly Includes Wheel End Adapter And Caliper Extension Adapter The Challenger Lift CLHM 200 Disc Brake Dolly handles both calipers and rotors eliminating the need for additional pieces of equipment in the shop. The CLHM 200 saves time and increases shop productivity as all adapters may be stored on the dolly and can be interchanged quickly by pinning and unpinning adapters to the post.