Superior Parts GS1 Aftermarket Gasket Kit for Hitachi NR83 and NV83 Guns. Kit includes 877-325, 877-854, 877-329, 877331, & 877-334. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov.