It features excellent elasticity, wear resistance, corrosion resistance, heat resistance, mechanical strength, insulating properties, and mechanical forming properties. Made of premium material, these washers provide good insulation performance. This set includes many sizes that can meet your various needs. All washers are well packed in a plastic box for convenient storage. Each set contains many washers that can be used for a long time. So you don't need to run around looking for your washers for a long time. Suitable for all kinds of transformers, electrical appliances, electronics industry Specification: 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 Feature Excellent insulation properties High mechanical strength Resistance to high point become very rich