Set of 52 thread gauges for bolts and nuts (28-inch and 24-inch metric), ideal for checking bolt and nut sizes in tight spaces

Function:1.[Removable Thread Gauge] The thread inspection kit is neatly stored in a blow-molded box, allowing you to easily remove the individual thread gauge for quick and convenient thread identification.This allows you to effortlessly inspect thread sizes in tight or hard-to-reach areas without having to move the entire heavy tool.2.[Engraved Markings] Each thread gauge has size markings engraved on its side for quick and accurate identification.Dual color coding is applied to clearly distinguish specifications, with blue representing imperial units and red representing metric units.All sizes and numbers maintain long-lasting legibility.3.[Quick Identification] This thread inspection kit offers 3 convenient reading methods for easy reference: sizes engraved on an individual gauge, a size chart sticker inside the storage box lid, and screen-printed size markings on the internal foam insert.Each method ensures you can quickly retrieve the required size.[Multiple Specifications] This thread inspection kit provides 28 imperial (blue) and 24 metric (red) specifications, meeting your various thread inspection needs and suitable for a wider range of scenarios and projects.[Versatile Use] Simply insert the nut or bolt into the corresponding gauge to determine its specifications in seconds.Whether you're replacing damaged, loose, or rusty fasteners at home, in a garage, or in a workshop, this kit helps you get the job done more efficiently. 23.2 x 18.5 x 4.5 cm / 9.1 x 7.3 x 1.8 inches
Imperial Unit Specifications: (Blue 28 Pieces)
2-56, 4-40, 6-32, 6-40, 8-32, 10-24, 10-32, 12-24, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20, 9/16-12, 9/16-18, 5/8-11, 5/8-18, 3/4-10, 3/4-16, 7/8-9, 7/8-14, 1-8, 1-12
Metric Unit Specifications: (Red 24 pieces)
M2-0.4, M2.5-0.45, M3-0.5, M4-0.7, M5-0.8, M6-1.0, M7-1.0, M8-1.0, M8-1.25, M10-1.0, M10-1.25, M10-1.5, M12-1.0, M12-1.25, M12-1.5, M12-1.75,
M14-1.5, M14-2.0, M16-1.5, M16-2.0, M18-1.5, M18-2.5, M20-1.5, M20-2.5

Package List:28 x Imperial Thread Testers (Blue)
24 x Metric Thread Testers (Red)
1 x Blow Molded Box