Quantity: 44pcs. Use the detachable nut and bolt gauges to check, identify & verify nut and bolt size. – Bolt thread checker gauge box can help users to check the sizes of nuts and bolts quickly. Start quickly indentifying and distinguishing thread thickness.
DETACHABLE DESIGN: Individual thread gauges can be removed from the case for easy use in hard-to-reach areas, allowing for precise thread identification in confined spaces.