This Brass spacer can be widely used in high-temperature, high-pressure, and highly corrosive pressure, valves, sealing parts of cylinder heads, and industries such as car, steel mills, chemical equipment, and engineering machinery.Specification Material: BrassSize: 20mm ID x 26mm OD x 15mm L / 0.79in ID x 1.02in OD x 0.59in LCompatible Screw Size: 7/9inch , M20 Screws BoltsPackage List: 1 PCS M20 brass spacerAdvantageMade of durable Brass material, which is hard, good performance, good electrical conductivity, corrosion resistance and can be used for a long time.Instruction Easy to use, just need to install on the with proper diameter.NOTE: Please select the appropriate size according to your needs.