【304 Stainless Steel】These washers are made of 304 stainless steel, durable and rust resistant. 【8 Sizes】This set includes 8 sizes of washers to meet different needs. S > 【Sorted】All washers are well packed and sorted in a plastic box for easy selection. 【300 Pieces】There are 300 pieces of lock washers in total, you can use them for a long time. 【Carton Packed】In case there is any mess, all lock washers are well packed in a plastic box.