• Universal fit for all 2- or 4-stroke, single or multi-cylinder gasoline engines
    
• Immediately identifies a problem with spark or fuel
    
• Takes about 30 seconds
    
• Essential for trouble shooting all internal combustion engines
    
• Replaceable bulb
    
• Rust-resistant
    
• Tester snaps on tightly so it will not fall off when engine starts
    
• Great troubleshooting aid
    
• Durably designed for a long service life
    
• Saves time and money while also offering a safe secure way to identify spark
    
• No more guessing about the spark of the engine - It takes all the guess work out of knowing if you’re getting power to your spark plug
    
• No more shocks from holding a wire to the block
    
• DIY Tool Approved!