YOU ARE BIDDING ON A WORKING DYLASTIR 6" LABORATORY MAGNETIC STIRRER 58935-250 TESTED SCIENTIFIC, WE TESTED IT WITH A BOWL OF WATER AND THE WATER MOVES. PLEASE LOOK AT ALL THE PICTURES AS THEY ARE PART OF THE DESCRIPTION. WE HAVE ALOT OF OTHER ITEMS FOR SALE AND WILL COMBINE OR LOWER SHIPPING WHERE POSSIBLE. THANKS FOR LOOKING ASK ANY QUESTIONS AND PLEASE CHECK OUT OUR OTHER AUCTIONS.