Product Description Design Hex Socket Cap design, can be easily driven by Allen keys and does not slip easily. It also has a thin edge that could dig into the contact surface for a secure grip on a wide range of surfaces. Material 304 high quality stainless steel. Stainless steel is a common material with a density of 7.93 g/cm3, also known as 18/8. It has good workability and high toughness up to a temperature of about 800 degrees. Dimension M2.5*3----20Pcs M2.5*4----20Pcs M3*3------20Pcs M3*4------20Pcs M3*10----20Pcs M4*4----20Pcs M4*6----20Pcs M4*8----20Pcs M5*5----20Pcs M5*8----20Pcs M5*10----20Pcs M6*6----20Pcs M6*10----20pcs M8*8----20pcs M8*12----20Pcs Application Suitable for door handles, faucet, light fixture, knobs, hardware repair, plumbing and other small repairs around the shop, garage or home.