Features: _x000D_ Made of high quality 304 stainless steel, rust and corrosion resistant, widely used in industry _x000D_ This set is organized by size in a transparent storage case for quick access and protection. _x000D_ There are 6 different sizes in one set to meet your various needs. _x000D_ Ideal for use by a variety of workers and repairmen from plumbers to assemblymen both professional and amateur, even DIYers can opt to use it. _x000D_ Similar to countersunk head screws, the nail head is embedded in the machine parts. Generally used in various machine tools and accessories _x000D_ _x000D_ Specification: _x000D_ Material: 304 stainless steel _x000D_ Weight: Approx.556g/19.6oz _x000D_ Size: _x000D_ 1/4-20*1/2 10pcs _x000D_ 1/4-20*5/8 10pcs _x000D_ 1/4-20*3/4 10pcs _x000D_ 1/4-20*1 10pcs _x000D_ 1/4-20*1-1/8 10pcs _x000D_ 1/4-20*1-1/4 10pcs _x000D_ 1/4-20*nut 30pcs _x000D_ _x000D_ Package list: _x000D_ 1/4-20*1/2 10pcs _x000D_ 1/4-20*5/8 10pcs _x000D_ 1/4-20*3/4 10pcs _x000D_ 1/4-20*1 10pcs _x000D_ 1/4-20*1-1/8 10pcs _x000D_ 1/4-20*1-1/4 10pcs _x000D_ 1/4-20*nut 30pcs _x000D_ _x000D_ _x000D_ Note:_x000D_ 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.