You are bidding on a welch plug that fits many Walbro carbs in weed trimmers,leaf blowers and Briggs and Stratton carbs with a Walbro carb and maybe a few Tecumsehs,This is an aftermarket part and is thin and easy to install,I have used these and they work great,I have several of these so e-mail me if you need multiple plugs and I will get them listed for you,The photo is not of the actual item(its from the 7/16 welch plug listing that I have on e-bay)but you get the idea,This will be shipped in letter envelope to save on cost unless the winning person pays extra for other types of shipping,I also have other sizes if needed,e-mail me with any questions.   NOTE THAT IF YOU BID ON IT I MAY END THE LISTING EARLY WITH YOU BEING THE WINNING BIDDER THAT WAY YOU CAN GET YOUR EQUIPMENT UP AND RUNNING QUICKER,THANKS 672DUKE.