This is a Durable Stainless Steel Elongated Float Ball that can be used in a variety of Liquids, even mild corrosive.  Approximately 7" long and 2-1/2" diameter.  This Elongated Float is equipped with a 1/4" x 20 threaded mounting hole.  Will work with 9038 Square D switch by Schneider Electric.  Some friends of mine manufactured these for a manufacturer and I have 111 of these available.  FREE SHIPPING to adjoining 48 States.  Contact Ken for additional information, Five seven three-864-Two five four seven.  I am here to help, just give me a call.  I will consider an offer of $15.00 in lots of 10 or more, also if local pickup, and maybe $16.00 in lots of 5 or more. but no less.