A must for cowled engines, helicopters, & general safety by avoiding the fast turning propeller. Each kit includes a glow plug connector, a ground wire, and a dummy plug for remote power connection. Normally about 1/16" of boot must be trimmed off so the boot sets on top of the hex, not pressed over it. Wire springs backward, a tooth inside locks onto the groove in the tip of the plug. Smooth tip plugs like McCoy's, use the McDaniel product.

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