Dimensions (L x Ø): 20 x 20 mm Stable and quiet stirring even at high speeds. The cross shape creates deep turbulence for fast and efficient mixing. Even at low speeds efficient for biological applications. Turns on the bottom of the vessel to prevent sedimentation. The PTFE coating is chemically inert and resistant to aggressive chemicals. Dimensions (L x Ø): 20 x 20 mm Stable and quiet stirring even at high speeds. The cross shape creates deep turbulence for fast and efficient mixing. Even at low speeds efficient for biological applications. Turns on the bottom of the vessel to prevent sedimentation. The PTFE coating is chemically inert and resistant to aggressive chemicals.