Description: A standoff is afastener that is used to create space between two objects, often to properly position them. In the world of electronic components and electronic hardware, standoffs are typically used to space circuit boards, panels, doors or gears. Female-Female standoffs and Male-Female standoffs are both included in this set of different sizes. Features: Standoffs are made of high quality brass material, durable and long service life. Well polished surface without any bur, feels smooth and quite comfortable. Waterproof, rust resistant and easy to clean, you can simply clean it with a cloth. This set includes both Female-Female standoffs and Male-Female standoffs in different sizes. Well protected and assorted in a plastic box for convenient use and storage. Specifications: Material: Brass Box Size: Approx 12.8 x 6.5 x 2.2cm / 5.04 x 2.56 x 0.86" Weight: 320g(approx.) TypeSizeQuantityMale-FemaleM3 (4mm + 4mm)30Male-FemaleM3 (6mm + 6mm)30Male-FemaleM3 (6mm + 8mm)30Male-FemaleM3 (6mm + 10mm)30Male-FemaleM3 (6mm + 12mm)30Female-FemaleM3 (4mm)30Female-FemaleM3 (6mm)30Female-FemaleM3 (8mm)30Female-FemaleM3 (10mm)30Female-FemaleM3 (12mm)30Package Includes: 1 Box(300pcs) x Standoffs Note:1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. .