Stir Bar Kit - 16 Bars Product Dimensions (l x w x h) : 7.38x3.94x1.28in Polytetrafluoroethylene Stirring Bar Kit. Kit contains: (2) each 5/16 x 1/2 (8 x 13mm), (2) each 3/8 x 2 (9.5 x 51mm), (2) each 5/16 x 5/8 (8 x 16mm), (2) each 3/8" x 2 1/2 (9.5 x 64mm),(2) each 3/8 x 1 (9.5 x 25mm), (2)...