#7245 Bolt Stretch Test Block/Torque Calibration Tool
Know with confidence that all of your engine bolts are at exactly the recommended setting. Torque wrenches vary in their readings and accuracy due to age, quality of the tool, and especially important, the way the tool is maintained and used (or mis-used).
Calibration tools for torque wrenches are available, but notoriously expensive. ARC's bolt stretch test block is an economical, dependable and reliable way to determine your individual tool's settings. Accuracy is dependent on the care used in precisely measuring bolt stretch until it reaches the correct length.
Complete and easy to understand instructions are included with purchase.