1、100% brand and high quality. 2、Made of premium material, these washers have good insulation performance. 3、There are many different sizes in this set that can meet your various needs. 4、Each set contains many washers that can be used for a long time, so you don't have to run to store looking for washers for quite a while. 5、All washers are well packed in a plastic box for convenient storage. Features: 100% brand and high quality. Made of premium material, these washers have good insulation performance. There are many different sizes in this set that can meet your various needs. Each set contains many washers that can be used for a long time, so you don't have to run to store looking for washers for quite a while. All washers are well packed in a plastic box for convenient storage. Specification: Material: Red steel paper Size(outer dia.*inner dia.*thickness) & Quantity: 10*5.5*0.8mm    160pcs 12*6.5*0.8mm    100pcs 16*8*0.8mm         60pcs 16*10*0.8mm       80pcs 19*12*0.8mm       40pcs 20*12*0.8mm       40pcs 22.5*14*0.8mm    20pcs 22*16*0.8mm       30pcs 25.4*17.5*0.8mm 15pcs 27*20*0.8mm       20pcs 32*22*0.8mm       20pcs 32*24*0.8mm       15pcs Weight: 180g / 6.3oz (approx.) Package list: 1 box * Washers