Description: <p>[Durable Material]: for Bolt Size and Thread Gauge is made of stainless steel material,high hardness,durable.Suitable for plumbers,handymen,repairsmen,auto mechanics,machinists.</p><p>[Quick Identification]:Our nuts for bolt organizer for everyday use,which can help you quickly sort out your assorted nuts and bolts and get them well organized,quickly check nuts and bolts in inch or metric and verify the size and thread pitch.</p><p>[Nut And for Bolt Thread Checker]:44 Pieces Nut and for Bolt Thread Checker with storage box,44 male/female gauges,red gauges are metric (21pcs),and blue gauges are inches (23pcs).</p><p>[23 Various INCH SIZES(Blue)]:1-12,1-8,3/4-16,3/4-10,5/8-18,5/8-11,9/16-18,9/16-12,1/2-20,1/2-13,7/16-20,7/16-14,3/8-24,3/8-16,5/16-24,5/16- 18,1/4-28,1/4-20,10-32,10-24,8-32,6-40,6-32.</p><p>[21 Various METRIC SIZES(Red)]: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,M12-1.25,M12-1.5,M12-1.75,M14-1.5,M14-2.0, for M16-1.5, for M16-2.0,M20-1.5,M20-2.5,M24-2.0,M24-3.0.</p> Specification: <p>Material:Stainless Steel</p> Size_Chart: Note: <p>Please allow slightly errors due to manual measurement and different monitors.</p> Package_Includes: <p>44 Nut and for Bolt Thread Checker</p>