Features • High-Quality Metal Construction: Crafted from durable metal, this tool ensures long-lasting performance and resistance to wear and tear • Smooth Probe Curvature: Features a finely designed probe for accurate measurements, providing consistent results for various hole sizes • Secure Locking Mechanism: Equipped with a reliable locking device, allowing for easy adjustments and secure settings during use • Ergonomic Non-Slip Handle: Designed with a plaid non-slip grip for enhanced comfort and stability, making measurements quick and effortless • Versatile Measuring Range: Covers a measuring span of 3.5in to 5.9in (90mm to 150mm), ideal for various projects with 6 pieces included for multiple applications Features: 1、The adjustable inner diameter gauge is made of high？quality metal, making it not easy to and . 2、The of the inner diameter gauge is smooth, and the curvature of the probe is good. 3、The telescopic gauge has a locking device at the tail, which can be tightened clockwise and loosened counterclockwise 4、Our product is designed with plaid non？slip handle, making it more convenient for measurement. 5、The telescopic gauge measuring range is about 3.5in to 5.9in (90mm to 150mm), including 6？piece sets. Specification: Item Type: Adjustable Inner Diameter Gauge Measuring Range: Approx. 90-150mm / 3.5-5.9in Accuracy: 0.01 How to Use: 1. Pinch the inner diameter ruler tightly and put it into the object to be measured. 2. Rotate once to ensure that there is no skew. 3. After the measurement is correct, tighten the lock clockwise. 4. After locking, measure the inner diameter data with a caliper. Package List: 1 x A Type Inner Diameter Gauge 1 x B Type Inner Diameter Gauge 1 x C Type Inner Diameter Gauge 1 x D Type Inner Diameter Gauge 1 x E Type Inner Diameter Gauge 1 x F Type Inner Diameter Gauge Package List 1 x A Type Inner Diameter Gauge 1 x B Type Inner Diameter Gauge 1 x C Type Inner Diameter Gauge 1 x D Type Inner Diameter Gauge 1 x E Type Inner Diameter Gauge 1 x F Type Inner Diameter Gauge