Features:_x000D_ _x000D_ Double action handles are rigidly attached to the contact plungers and are automatically self-centering. _x000D_ Assist in quick checking of holes, slots and recess up to 6 inch deep. _x000D_ The ends of both contact are head treated steel and precision ground to a radius allowing proper clearance on the smallest hole the gauge will enter. _x000D_ Constant spring tension delivers uniform contact pressure. _x000D_ Super quality, high rigidness, good wear resistance, durable in use. _x000D_ _x000D_ Specification:_x000D_ Condition: Brand new_x000D_ Material: Tool steel_x000D_ Color: Shown as picture_x000D_ Measuring Range: 8-150mm_x000D_ Accuracy: 0.1_x000D_ Quantity: 6Pcs/Set (ABCDEF)_x000D_ 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._x000D_ _x000D_ Package List:_x000D_ 1 Set Telescopic Gauge (6pcs)