Bel-Art Spinbar Stir Bars Polygon. Inert and chemical resistance allows these stir bars to be used in nearly all types of media. A pivot ring is placed around the outside of the polygon and this ring along with the surrounding liquid Nylon provides a fulous stir without a central pivot point. The shape of the polygon allows many types of attachments including magnetic stirring needles tapered magnetic stirring bars magnetic stir bars with one handle magnetic stir bars with two handles and the magnetic stir bar with two handles. Each is encapsulated in FDA grade Teflon PTFE. Specifications for Bel-Art Spinbar Stir Bars Polygon 371205038 : L x Dia. mm (in.): 25.4 x 9.5 (1 x 3/8) Unit: Each (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Bel-Art products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Laboratory Apparatus with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Bel-Art Laboratory Apparatus. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Bel-Art Spinbar Stir Bars Polygon 371205038/ 58948-983 we carry a full complement of Laboratory Apparatus as well as other product offerings from Bel-Art. We also carry a full line of Bel-Art accessories to help meet your laboratory and scientific needs. For a complete selection of Bel-Art Laboratory Apparatus please visit our Bel-Art page. For more brand name Laboratory Apparatus please visit our Laboratory Apparatus store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Bel-Art Spinbar Stir Bars Polygon 371205038