Adjustable gap lets you test for spark under a load – good way to identify a non-working or weak coil.
Performance Tool W84600 - High Energy Ignition System Tester Tool Spark Tester
Performance Tool W84600 High Energy Ignition Tester
Performance Tool W54204 Performance Tool Professional Pistol Grip Grease Gun
Performance Tool W54205 Performance Tool Mini Grease Gun Kit W/3oz Cartridge
Performance Tool W54205 Performance Tool Mini Grease Gun Kit with Grease Black