Innovative Products of America 7894 Flexible Compression Whistle
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<b>[Product Information]</b><br>
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<li>Insert the flexible whistle alert into any spark plug hole and bump the engine until you hear the whistle blow</li>
<li>Easily finds top dead center on compression stroke making it quick and easy to use</li>
<li>Rubber nipple adapts to any spark plug thread size</li>
<li>Flexible hose allows for reach in tight spaces</li>
<li>Made and assembled in U.S.A.</li>
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