The Sears Flexible Drive Engine Compression Tester Kit 28-2171 is a high-quality automotive tool designed for testing engine compression. Made in the United States by Sears, this compression tester can measure up to 300 PSI of pressure. The kit includes one unit and is perfect for diagnosing and maintaining engine performance. With its durable construction and precise measurements, this compression tester is a valuable addition to any mechanic's tool collection. Tested it works
