Keep this screw set assortment kit on hand for those times when you need a replacement screw to assemble or repair various items around the home or in the office. These countersunk, flathead machine screws are ideal for a variety of household applications, such as replacement electric outlet cover screws and electrical panel screws, which typically use 1/2-inch long 6-32 screws. The other sizes can be used as replacement screws to repair or assemble office chairs, computer stands, office desks, and metal shelving units. When combined with machine nuts of the appropriate size and thread count (not included), they can be used to assemble your do-it-yourself (DIY) crafting or home improvement projects. It is also the perfect accessory for the professional handyman or woman who cannot rely on the homeowner to have all the required hardware for any given project. This 400-piece kit includes 40 each of the #6-32x1/2, #6-32x3/4, #6-32x1, #8-32x1/2, #8-32x3/4, #8-32x1, #8-32x1-1/4, and #10-24x1/2 machine screws, 30 each of the #10-24x3/4 and #10-24x1 screws, and 10 each of the #10-24x1-1/4 and #10-24x1-1/2 screws. The screws are stored in a handy, 12-compartment storage box made of polypropylene (PP), with a less rigid structure and resistance to cracking and breaking in the way that more rigid, hard plastic containers are prone to do. You will also receive a #2 Phillips driver bit that can be used to tighten or loosen the screws using a standard driver handle, T-shaped driver handle, ratchet wrench, electric screwdriver, or variable-speed electric drill.