[] Made from quality aluminum with black coating, resistant to wear, high strength, not easy to deform, and lightweight. [Functions] Can conveniently, quickly, and accurately measure valve spring installed height. Suitable for most V8 engines. [Easy & Convenient to Use] Install the 4929 Height Micrometer just like a valve spring, then expand the tool until it seats the valve, locks, and retainer. [Precise Reading] Simulated installation allows ultra-precise readings. This tool is read like a micrometer. Measuring height range: 1.600 inch - 2.200 inch. Color: As shown Material: Aluminum Tips: Product may vary slightly between batches; slight differences in color or design may occur but do not affect performance. Package Contents: 1 x Valve Spring Height Micrometer Only the above package content is included; other items are not part of this sale. Note: Due to lighting and display differences, the actual color may vary slightly from the image. Measurement error allowance: +/- 1-3 cm.