In the video, a person is holding a spark plug in their hand and using a tool to check it. The spark plug has a metal body with a threaded end and a ceramic insulator on top. The person is wearing a black glove on their left hand while holding the spark plug. The tool they are using appears to be a spark tester, which is used to check the integrity of the spark plug. The spark tester has a metal probe that is inserted into the spark plug's metal body. The person is wearing a black glove on their right hand while holding the spark tester. The background shows a car engine with various components, including the battery, air filter, and coolant reservoir. The engine is covered with a protective plastic cover. The person appears to be checking the spark plug for any signs of wear or damage.