B&M LAUNCH CONTROL SOLENOID -- The choice for performance and dependability; Primarily used as a brake locking device for drag racing or as a hill holding device for street use; Provides the brake holding capacity to the front or rear brakes; Can handle pressure spikes up to 1500 psi or maintain constant pressure of up to 400 psi; Works with 12 and 16 volt systems and other B&M switches; Easy installation.