Check the listing for details. HOLLEY 4010 CARBURETOR QUICK SERVICE KIT 84010 84011 84012 84013 84020 BLUE. Condition: New. Listed at 35.95 USD. This is a quick service kit for the Holley 600 and 750 vacuum secondary model 4010 square bore carburetors if all you want to do is a quick clean and change the top bowl gasket and the needle and seats. Included are a pair of .110 v iton tipped needle and seats, a blue nonstick top bowl gasket plus 2 sets of paper needle and seat adjusting gaskets. These also work with the square bore Summit brand M2008 carburetors. The carburetor model numbers that this quick service kit fit is as follows: 0-84010 , 0-84010-1 , 0-84010-2 , 0-84010-3 0-84011 , 0-84011-1 , 0-84011-2 , 0-84011-3 0-84012 , 0-84012-1 , 0-84012-2 , 0-84012-3 0-84013 , 0-84013-1 , 0-84013-2 , 0-84013-3 0-84020 , 0-84020-1 , 0-84020-2 , 0-84020-3 0-84047 , 0-84047-1 R84010 , R84010-1 , R84010-2 , R84010-3 R84011 , R84011-1 , R84011-2 , R84011-3 R84012 , R84012-1 , R84012-2 , R84012-3 R84013 , R84013-1 , R84013-2 , R84013-3 R84020 , R84020-1 , R84020-2 , R84020-3 R84047 , R84047-1 These are only for the 4010 models and will not work on the 4011 but we do have those in another listing in our store. These will ship flat in a box by USPS First Class so they get to you quickly and safely without damage unlike others who may ship in an envelope. Be sure and check our store for more carburetor and fuel system kits and parts. BG,Barry Grant,Demon,Dominator, King Demon and Holley are all registered trademarks of HPI to which we have no affiliation nor are these parts manufactured by them. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov As of July 9th USPS has combined all non priority shipping including First Class into 1 service called Ground Advantage. Any listings that state we ship First Class will now be shipping Ground Advantage. Ebay is supposed to be updating this in the shipping section of the listing however to avoid any confusion if our description states First Class there is no more First Class available. They are telling us standard delivery times will stay between 3-5 to most locations as before however we have no control over these changes. Ebay will also be updating expected delivery dates if there are any changes there.