T-H Marine Saf-T-Stop Ignition Kill Switch for Single OutboardsThis T-H Marine safety ignition cut-off switch is for use with single outboards and meets requirements of existing laws covering mandatory use of emergency stop switches. Comes with an extra strong, coiled, self-retracting lanyard. The attractive black matte finish looks great on any vessel. Mounts in a 1-1/2" diameter hole; Overall dimensions of switch housing are 2-3/4" x 2"; Requires 1-1/2" behind panel;