2″ to 6″ DIAL BORE GAUGE TOOL. This Precision Dial Cylinder Bore kit includes… 0 to 0.25″ Dial Indicator Gauge (0.001″). Adjustable dead zero setting with fine adjustment knob, 6 Jewels, Shock Proof. Certificate of Inspection and Accuracy, ISO9001 Certified 10″ Stainless Steel Bore gauge holder. Ball Tip Extensions in sizes 2.0″, 2.2″, 2.4″, 2.6″, 2.8″, 3.0″, 3.2″, 3.4″, 3.6″, 3.8″, 4.0″. 2″ Thread in universal extension (adds 2 inches to above sizes). 3 Spacer .10″, .05″, .02″.. Fitted Plastic Storage Case. 1 Year Warranty. …BRAND NEW… NOT REFURBISHED…