Features • Self-Centering Design: Double action handles are rigidly attached to the plungers, ensuring measurements without the need for adjustments • Versatile Measurement Capability: Quickly check holes, slots, and reces up to 6 inches deep, making this tool ideal for various applications • Precision Ground Steel Ends: The heads are treated steel and precision ground to a radius, allowing smooth entry into the smallest openings for accurate readings • Consistent Prure Application: Constant spring tension ensures uniform prure during measurement, resulting in reliable and repeatable results every time • and High-Quality Build: Constructed for superior rigidity and excellent wear resistance, this set is designed to withstand regular use without compromising accuracy Features: 1、Double action handles are rigidly attached to the plungers and are automatically self-centering. 2、Assist in quick checking of holes, slots and rec up to 6 inch deep. 3、The ends of both are head treated steel and precision ground to a radius allowing proper clearance on the smallest hole the gauge will enter. 4、Constant spring tension delivers uniform prure. 5、Super quality, high rigidn, good wear resistance, in use. Specification: Features: Double action handles are rigidly attached to the plungers and are automatically self-centering. Assist in quick checking of holes, slots and rec up to 6 inch deep. The ends of both are head treated steel and precision ground to a radius allowing proper clearance on the smallest hole the gauge will enter. Constant spring tension delivers uniform prure. Super quality, high rigidn, good wear resistance, in use. Specification: Condition: Material: Tool steel Color: Shown as picture Measuring Range: 8-150mm Accuracy: 0.1 Quantity: 6Pcs/Set (ABCDEF) Scope of Application: Telescopic spring piston in the hole (or groove), can conduct inner diameter detection, used with micrometer or caliper, with knurled locking device. Package List: 1 Set Telescopic Gauge (6pcs) Package List