Keep your repair jobs running smoothly with this comprehensive 185-piece aluminum flat washer assortment kit. Designed for oil drain plugs and sealing applications, these washers are ideal for use in automotive and motorcycle oil changes, as well as a wide range of general mechanical tasks. The kit includes seven outer diameter sizes — 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, and 22mm — giving you the right fit for virtually any job. Each washer is crafted from aluminum with a smooth, burr-free finish and a standard round shape, ensuring a clean, reliable seal every time. The clear thread openings and consistent dimensions make installation straightforward and hassle-free. All 185 pieces are neatly organized in a reusable plastic storage case with individual compartments, so you can quickly find the size you need and keep your workspace tidy. Whether you're a professional mechanic or a dedicated DIY enthusiast, this versatile assortment is a must-have addition to your toolbox. Not suitable for children under 6 years of age due to small parts.