Heidolph Overhead Stirrer Impeller BR 11 Straight-Blade - 036300340 "• Recommended for applications which require average speed • For mixing tasks with little or average viscosity • Blade size, 50 x 12mm • Material – stainless steel • Length – 400mm • Shaft diameter – 8mm • Max rpm – 2000" Dimensions (L x W x H"): 12 x 14 x 2