90pcs 1/4-20UNC Stainless Steel Hex Socket Cap Head Bolts Hex Screw Assortment Kit Features: Made of 304 stainless steel, rust and corrosion resistant, widely used in industry This set is organized by size in a transparent storage case for quick access and protection. There are 6 different sizes in one set to meet your various needs. Ideal for use by a variety of workers and repairmen from plumbers to assemblymen both professional and amateur, even DIYers can opt e it. Similar to countersunk head screws, the nail head is embedded in the machine parts. Generally used in various machine tools and accessories   Specification: Material: 304 stainless steel Weight: Approx.556g/19.6oz Size: 1/4-20*1/2     10pcs 1/4-20*5/8     10pcs 1/4-20*3/4     10pcs 1/4-20*1       10pcs 1/4-20*1-1/8   10pcs 1/4-20*1-1/4   10pcs 1/4-20*nut      30pcs   Package list: 1/4-20*1/2     10pcs 1/4-20*5/8     10pcs 1/4-20*3/4     10pcs 1/4-20*1       10pcs 1/4-20*1-1/8   10pcs 1/4-20*1-1/4   10pcs 1/4-20*nut      30pcs Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.