Metal material: The hole and cone gauge is made of high-quality Metal material and has a long service life. Precise construction for quick and easy measurement. Precision measurement: The hole taper ruler can easily measure the hole with an accuracy of 0.1mm, which is ideal for fine work in a variety of applications. The structure is simple and the design is reasonable. Precise design: The caliper is fully tapered along the length for fast and reliable measurement in professional environments. A wide range of applications: the hole taper is suitable for measuring thin-walled parts, plastic pipes, inner diameters and holes.A wide range of applications: the hole taper is suitable for measuring thin-walled parts, plastic pipes, inner diameters and holes. Item Type: Hole Tapered Gauge Accuracy: 0.1mm Measuring Range: 3-15mm Note: Please note that the type and old type of this product will be sent randomly , don't accept the specified, and make sure you will not mind before ordering. Colour:As Shown Material:Metal Package Contents: 2 x Hole Tapered Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.