✓66-Piece SAE & Metric Thread Checker Set: Includes 34 inch/SAE sizes and 32 metric sizes for identifying common nuts, bolts and screws. The wide size range makes this nut and bolt thread checker useful for checking unknown fasteners, finding replacement hardware and sorting mixed nuts and bolts in garages, workshops, tool rooms and home repair projects.
✓Detachable Thread Gauges for Tight Spaces: Each thread gauge can be removed individually from the storage case, so you can take only the size you need when working around machinery, vehicles, appliances or other narrow and recessed areas. Compared with bulky fixed boards or connected gauge sets, the detachable design makes thread identification more convenient in hard-to-reach spaces.
✓34 Inch/SAE Thread Sizes: Includes 1-8, 1-12, 2-56, 2-64, 3-48, 4-40, 4-48, 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, 8-32, 10-24, 10-32, 3/16-24, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 6-32, 6-40, 12-24, 12-28 and 8-36.
✓32 Metric Thread Sizes: Includes M2x0.4, M2.5x0.45, M3x0.5, M3.5x0.6, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M9x1.25, M10x1.0, M10x1.25, M10x1.5, M11x1.0, M11x1.5, M12x1.0, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M14x2.0, M16x1.5, M16x2.0, M18x1.5, M18x2.5, M20x1.5, M20x2.5, M22x1.5, M22x2.5, M24x2.0 and M24x3.0.
✓Quick Thread Identification & Organized Storage: Match the unknown nut, bolt or screw with the corresponding gauge to identify thread size and pitch before choosing replacement hardware. The fitted storage case keeps all 66 pieces separated and organized, while the printed size chart helps you locate the needed gauge quickly. Ideal for automotive repair, mechanical work, DIY projects, home maintenance, garages and workshops.