Crafted from wear resistant grand high conductivity copper, these replacement carbon brushes maintain stable functionality under varying workloads, effectively prolonging your electric hammer ' s life Packaged in a sturdy iron casr for easy storage and transport, this set includes 4 brush caps to against, enabling quick, tool less replacement enhances user convenience Designed for professional and enthusiasts in construction, maintenance, and renovation fields who demand dependable power tool accessories for efficient project execution This value pack of 20 carbon brushes for electric hammers ensures reliabled, long term operating in heavy duty construction and repair tasks, durability for consistent power tool Ideal for demanding scenarios like demolition, drilling, and building repairs where robust electric hammer brushes are essential for uninterrupted, high intensity work, Manufacturer: HENYGEN