Enhance the maintenance of your commercial vehicle's braking system with the Pro-Graad 46250 6 Pack 2-1/2” 60mm x 22mm XL Brake Hub Cleaning Replacement Pads. This refill pack includes 6 durable discs designed specifically for commercial trucks, buses, RVs, and trailers equipped with 22mm studs. Compatible with Counteract HBCR22, HB22, HBCTK-22 Hub Pro XL Holders (holder tool not included), these discs feature a hollow center design that allows safe placement over wheel studs, protecting threads from damage during cleaning. Engineered for efficiency, the discs swiftly remove rust, corrosion, and debris from brake hubs and wheel surfaces without excessive material removal or gouging. This ensures optimal wheel integrity and prepares mating surfaces for seamless installation. The discs are easy to use with a twist and lock mechanism that facilitates quick replacement, minimizing downtime during maintenance sessions. Ideal for more than 90% of commercial truck wheel end components, these discs are a reliable choice for fleet maintenance and commercial automotive workshops. It is recommended to operate them at speeds below 5,000 RPM and only in the forward (clockwise) direction for best results. Whether for routine maintenance or before installations, the Pro-Graad Brake Hub Cleaning Replacement Pads deliver consistent performance and durability, ensuring your vehicle's braking system operates at peak efficiency and safety levels.