Insert the flexible whistle alert into any spark plug hole and bump the engine until you hear the whistle blow
Easily finds top dead center on compression stroke making it quick and easy to use
Rubber nipple adapts to any spark plug thread size
Flexible hose allows for reach in tight spaces
Made and assembled in U.S.A.

Technical Details

Size (LWH): 10.8 inches, 1.1 inches, 1 inches
Product Details
Product Dimensions: 10.8 x 1.1 x 1 inches
Shipping Weight: 0.05 pounds (View shipping rates and policies)
ASIN : B000TQ16HG