Vigrue Hex Bolts Assorted Black Sae Bolt Nuts Kit, 316Pcs, Fully Threaded ?304 Stainless Steel?these bolts set are made of 18-8 stainless steel, with excellent anti-rust and corrosion resistance property, can be used in humid environments. ?16 Various SAE Sizes?Use for fastening metal, wood and plastic materials together, Includes all most common appplied sizes: 6 sizes for 1/4 - 20 series: 3/8" 1" 3/4" 1-1/4" 1-1/2" 2"; 6 sizes for 5/16-18 series: 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"; 4 sizes for 5/16-18 series: 1/2" 3/4" 1" 2" ?Easy to Store?VIGRUE Bolt kit are stored in a durable portable organizer with clear size chart, convenient for your storage and use, handy for your daily reaching and putting away. ?Black Oxide?The black oxidized finish isolates the air for rust prevention and eliminates reflective features. ?316PCS Hex Bolts Kit?Includes bolts and matched nuts and washers, no need to prepare other related nuts and washers. Increase efficiency of use and save time