10pcs: 5pcs screw extractor + 5pcs drill bits, very practical: thanks to its reverse helix geometry Extractor sizes: #1, #2, #3, #4, #5 Drill sizes: 5/64", 7/64", 5/32", 1/4", 19/64". Different sizes to meet your needs Made of high-quality steel, with high strength and hardness. Comes with a metal case that provides a storage location for the tools for easy storage. 10-piece Allen wrench set This offset Allen wrench set allows you to quickly and easily screw and unscrew Allen screws. Each Allen wrench is precisely machined and fits perfectly into the groove of the hex socket screw to prevent damage. Assemble your furniture and Repair your machines with these versatile tools. The size within 1-3cm size difference is within the normal range due to manual measurement. The color may have a little difference due to lights, screens.