The T-H Marine Single Outboard Saf-T-Stop Kill Switch could be exactly what you need if you're looking for a reliable emergency boat kill switch. Saf-T-Stop Kill Switches for boats meet all the requirements of the existing laws that mandate the use of emergency stop switches, ensuring that you can operate your boat safely and legally. The lanyard is extra strong, coiled, and self-retracting, so you can trust it to function properly in an emergency. Additionally, the black matte finish gives it a sleek and attractive appearance. With a mounting diameter hole of 1 1/2' and overall dimensions of switch housing at 2 3/4' x 2', it's easy to install and requires just 1 1/2' of space behind the panel.Saf-T-Stop - Ignition Kill Switch - Single Outboard KS-1-DPSuits all single outboard installationsMeets requirements of existing laws covering mandatory use of emergency stop switchesExtra strong, coiled, self-retracting lanyardAttractive, black matte finishSpecs:Mount hole size: 1 1/2 in. diameterSwitch housing dimensions: 2 3/4 in. x 2 in.Panel clearance required: 1 1/2 in.Quantity per pack: 1