Contains 20 replacement carbon brushes (CB459) so you always have spares on hand for routine maintenance and unexpected wear. Designed for reliable electrical contact: each brush includes thick copper wiring to ensure efficient current flow and stable motor performance. Built for durability: carbon construction with a robust spring mechanism resists deformation at temperatures and maintains consistent contact as the brush wears. Direct fit compatibility: suitable for a wide range of power tools, including the GA5030 angle grinder and the PJ7000 biscuit jointer. Easy to install: standard brush shape and spring design simplify replacement, minimizing downtime and getting tools back to work quickly. Key attributes Model: CB459 carbon brushes Quantity: 20 replacement brushes Materials: carbon brush body, thick copper wiring, durable spring mechanism Function: transfers electrical current to the motor commutator while maintaining contact under load and heat How this solves problems Prevents unexpected stops by keeping multiple spare brushes available for routine swapouts. Improves motor consistency by maintaining efficient electrical conductivity through thick copper wiring. Reduces maintenance frequency and risk of damage from overheated or misshapen brushes thanks to a spring and carbon design that withstands temperatures. Typical applications Construction and metalwork: worn brushes in a GA5030 angle grinder used for cutting, grinding, or polishing metal onsite. Woodworking and cabinetry: maintain the PJ7000 biscuit jointer in a woodworking to ensure consistent motor torque for accurate joints. Home workshop maintenance: keep a supply of CB459 brushes for general powertool upkeep to avoid project delays. Professional, compatible, and ready to keep your tools operating smoothly.