Essential for DIY and Professional use.
	
Enables quick and easy Spark Plug testing and engine problem diagnosis.
	
Full kit (10 /12 /14mm).
	
Manufactured from durable high grade materials: poly-carbonate, aluminium, brass, copper, rubber and fully insulated.
	
Remote adjustable viewing platform.
	
Solid earth / grounding.
	
Reliable as no bulbs, fuses, batteries or electronics to give false readings.
	
Prevents any debris falling into the engine.
	
Doubles as in-line spark plug tester...simply connect and run your engine to test your spark plug(s).