Inline switch that connects the two outer pins in the housing when the brake is pressed. This can be attached to the outer cable during construction. Or mounted on the end of the cable with the correct cable cap. Cable cap max. Dia. 6mm fits on both ends Rubber insulation cap and cover incl Switch is nominally activated with a force of 10kg-15kg linear force. Of course this is reduced by the handle on the handlebar end. When installing this on a cable, it is important to note that the cable cap does not collide with the aluminum cap, as this will show that the central pin is fully depressed.