Description: Our nut and bolt thread pitch gauge set includes a wide range of 44 male and female gauges. These gauges are designed to be stronger, sturdier, and more legible, making them ideal for HVAC technicians, appliance technicians, installers, maintenance staff, bicycle repairmen, and others who frequently need to measure thread. Whether you store it in your home garage or at your auto shop, this set is a reliable tool for all your thread measurement needs.Features:44 pieces (including 23 imperial pieces and 21 metric pieces).Micron level dimensional accuracy.Aluminum alloy material, lighter weight.Not easy to oxidize and more durable.Read marks clearly.Plastic storage box (contains high-density foam solids).Package Content: 44Pcs Thread Checker Tools:METRIC: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, M12x1.75, M14x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0, M24x3.0. INCHES: 6-32, 6-40, 8-32, 10-24, 10-32, 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, 1-8, 1-12.1 x Carry Box