A combination brush helps a compatible robotic cleaner maintain surface contact while scrubbing and moving across the pool, and this Maytronics Dolphin 3001 HD 2x2 blue version uses the 6101660 reference. Brush components are important because they affect both cleaning action and how the cleaner interacts with pool surfaces.This brush has practical value because the combination design supports a balance of traction and cleaning function, while the 3001 HD 2x2 fitment keeps the part aligned with a specific Maytronics cleaner family. A properly selected replacement brush helps preserve the cleaner’s intended contact pattern and overall cleaning consistency.This type of part is especially useful when the original brush has worn down, hardened, or lost the surface engagement needed for dependable performance. That helps restore the cleaner’s working behavior without unnecessary full-assembly replacement.Installed in the proper application, this combination brush helps support cleaner scrubbing performance and more dependable robotic movement. Blue combination brush for compatible Maytronics Dolphin 3001 HD 2x2 cleaner applications Helps support surface contact, traction, and scrubbing action Useful when replacing a worn or hardened original brush Supports cleaner performance consistency Improves surface engagement and service confidence