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Scienceware* Spinbox* Octagon-Shaped Stir Bar Assortment
Octagon assortment box with micro Spinbars* (Teflon with pivot ring), 16 bar assortment. 12 octagon Spinbars and 4 fleas. Contains two each: 7 x 2 mm, 10 x 3 mm, 1/2 x 5/16 in., 5/8 x 5/16 in., 1 x 3/8 in., 1 1/2 x 3/8 in., 2 x 3/8 in., 2 1/2 x 3/8 in.