[DETAIL] Features: Top quality copper material, melting point up to 1083 Celsius. Good electrical conductivity and thermal conductivity. 200pcs solid copper sump plug washer set. All contained in a compact and see through compartmented plastic case. Great for sump plugs, water, fuel and hydraulic fittings. A sump plug washer set to suit all types of engines be it Car, Marine, Generators, Machinery and Plant. 200PCS Size: (I/D x O/D x TS) M5*9*1mm 30pcs M6*10*1mm 30pcs M6*12*1mm 20pcs M8*12*1mm 20pcs M8*14*1mm 20pcs M10*14*1mm 20pcs M12*16*1mm 20pcs M12*18*1.5mm 20pcs M14*18*1mm 20pcs Note: -Please allow 1-5mm errors due to manual measurement. -Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. [ATTRIBUTES] - Hign-concerned Chemical: None - Thickness(mm): 1mm/1.5mm - is_customized: Yes - Hign-concerned Chemical: None - Thickness(mm): 1mm/1.5mm - is_customized: Yes - Model Number: 100PCS/200PCS - DIY Supplies: Metalworking - Origin: Mainland China - Copper Washer Gasket Nut and Bolt Set Flat Ring Seal Assortment Kit with Box //M8/M10/M12/M14 for Sump Plugs: 300/280/200/100Pcs Washer Copper Sealing Solid Gasket Washer Sump Plug Oil For Boat Crush Flat Seal Ring Tool - M5 M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 Boat Red Brass Copper Crush Sealing Washer Flat Seal Ring Gasket Washers DIN7603: Washer M5 M6 M8 M10 M12 M14 M16 M20 Copper Washer Gasket Nut and Bolt Set Flat Ring Seal Assortment Kit with Box for Sump Plugs