PEAKTREND 200pcs Flat Copper Washer Assortment Set 9 Sizes M5-M14 O Ring Copper Gaskets Set Flat Ring Seal Kit

["9 Metric Sizes:M5*9*1mm, M6*10*1mm，M6*12*1mm，M8*12*1mm，M8*14*1mm, M10*14*1mm，M12*16*1mm,M14*18 *1mm, M12*18*1.5mm.","High Quality: Flat Washer Made of High-Quality Red Copper, Provides Temperature Resistance, High Conductivity, and Tighter Seal; Works Great In Wet Environment.","How to Work: Flat Washer Good to Reduce Pressure and Friction, Prevent Leakage, Isolate, Loosening or Disperse Pressure. Great for Sump Plugs, Water, Fuel, and Hydraulic Fittings","Application: Flat Washer Assortment Kit Widely Used for Electrical Connections, Such As Household, Commercial Appliances, Automotive and Marine, Fuel, Hydraulic Fittings etc.","Package Contents: 200pcs, 9 Sizes of the Most Commonly Used Flat Copper Washers in a Sturdy Case With Specification Label, Easy for Your Storage and Use!"]