Features: 1. Made of high quality stainless steel, it is of high hardness and good durability. 2. No deformation under great pressure. 3. Wear resistant and anti-corrosion, long service life. 4. Provides 8 sizes of flat washer for you to meet different requirements. 5. All washers is sorted and packed in a plastic case, convenient to carry and use. Specification: Material: Stainless Steel Quantity: 170pcs Color: Silver Package Weight: Approx. 97g/3.4oz Package list: 30 x M2*5*0.3 30 x M2.5*6*0.5 30 x M3*7*0.5 30 x M4*9*0.8 20 x M5*10*1 20 x M6*12*1.5 10 x M8*16*1.5 10 x M10*20*1.5 1 x Storage Case Note: Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item.