HiKOKI 940540 Brush Cap for a wide range of compatible Hitachi and HiKOKI corded power tools including demolition hammers, angle grinders, rotary hammers, saws and routers. This replacement cap screws into the carbon brush holder to securely retain and protect the carbon brush within the motor assembly. Suitable for replacing a cracked, damaged, worn or missing original brush cap and manufactured to the correct specifications for precise fit and secure installation.