ESI 130 Self - Powered Timing Light Reviewhttp://tinyurl.com/kkkwdhc ESI 130 Self - Powered Timing Light For 2 or 4 cycle engines, all ignition systems, accurate up to at least 14,000 rpmProtective sleeve withstands high temperatures (1200 Fahrenheit)Standard lead length 4 feetBright flash at all speedsBatteries included
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