Material and build - Made of high quality nylon - Nylon flat washers with long life and strong practicality Kit contents and organization - 7 sizes: M2, M2.5, M3, M4, M5, M6, M8 - Total quantity: 250 gaskets (washers) - Includes a storage box with separate compartments to keep each size organized Compatibility and performance - Suitable for hardware ranging from M2 to M8 - Designed to provide reliable load distribution and surface protection in everyday use Use scenarios - Electronics assembly or PC builds: helps secure components while protecting surfaces - DIY furniture assembly and home repairs: convenient for preventing damage during tightening - Bicycle maintenance and small mechanical projects: handy for spacers and load distribution in various setups Daily use ready - A practical, ready-to-use solution for a wide range of applications, kept neatly organized in a dedicated storage box