Comes with 18 different sizes, so that meets your different needs in the work.Made of high quality aluminum ensures the long life.perfect for replacing your old or broken aluminum gaskets.Comes with a small box, perfect for you to sort the different sealing rings.Brand new and high quality.This set of aluminium washers are made of top quality material. They have good electrical conductivity and thermal conductivity. Comes in a nice case and are in individual comparments by size. Insert paper has actual sizes so it is visible when case is open corresponding to each compartment making it easy to identify the washer size you need.Features:Color: silverMaterial: AluminiumPackage Including:450 x Aluminium WashersOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.