Black decker kc460ln cordless screwdriver black decker kc460ln the kc460ln cordless screwdriver from black decker is so compact it can be used in the most awkward places such as under sinks kitchen cupboards or inside the car it is supplied with a built in li ion battery which holds its charge longer than a standard 3 6v battery so there s no need for frequent charging there is also a reverse function for the removal of screws at the flick of a switch black decker kc460ln screwdriver 3 6