Description: 【Universal Size】: These washers assortment set includes 250pcs in 6 different sizes ensuring you have the right size for many job. Inner diamter: 50pcs 3mm, 50pcs 3.2mm, 50pcs 4.2mm, 40pcs 4.8mm, 30pcs 5.5mm, 30pcs 1/4'' 【Accurate Design】:The precise manufacturing ensures that each washer meets strict quality standards, providing consistent performance with each use. 【Durable Materials】: The spring washers made of 304 stainless steel materials, rust resistance, providing the good resisitance and high temperature, which ensures outstanding durability. 【Portable】: All pieces Splited Lock washers set comes in a durable transparent storage box, easy to store and carry anywhere. 【Widely Used】: These spring washers can be used in a variety of applications, including automotive, aerospace, construction, electronics, and more. Specification: Material: 304 Stainless Steel Package Includes: 50pcs 3mm 50pcs 3.2mm 50pcs 4.2mm 40pcs 4.8mm 30pcs 5.5mm 30pcs 1/4'' Note: Please allow slightly errors due to manual measurement and different monitors.