The Nemo Power Tools function switch is designed for compatible rotary hammer applications where the mode-selection control needs replacement. A function switch is useful because it helps the user select or change tool operating modes, supporting more dependable control and better task flexibility.This replacement is especially useful when the original switch is broken, sticking, worn, damaged, or no longer changing functions correctly. Replacing the switch can help restore dependable user control without replacing the larger tool assembly.The RK11005 is a practical service part when a compatible Nemo Power Tools rotary hammer needs a function switch to restore dependable operation. Nemo Power Tools rotary hammer function switch Designed for compatible hammer applications Helps restore mode-selection control Useful when the original switch is damaged or unresponsive Supports cleaner and more dependable tool performance