Kzyee KS30 Dual-Port Spark Plug Tester $17.99 + Free Shipping w/ Prime or on $35+

Kzyee us via Amazon [amazon.com] has Kzyee KS30 Dual-Port Spark Plug Tester on sale for $35.98 - 50% off when you 'clip' the coupon on product page [amazon.com] = $17.99. Shipping is free w/ Prime or on orders $35+.

Product Description from Store:

Model: KZYEE KS30
Power: 110-120V AC (corded electric)
Ports: Dual-port (tests two plugs simultaneously)
Recommended plug length: 34mm (1.34") or longer
Dual-port design: test two plugs side by side simultaneously for direct comparison
Compare a suspect plug against a known-good or new plug under identical conditions
One-button operation: install plugs, connect power, secure cover, then press and hold to test
Safety shield: tester only activates when the protective cover is fully secured
Clear cover lets you visually monitor both plugs during the test
Compatible with spark plugs from cars, motorcycles, ATVs, lawnmowers, generators, and other gasoline engines
Single-plug engines: use a same-type known-good or new plug in the second port

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