Heidolph Overhead Stirrer Impeller BR 13 Square-Blade - 036300360 "• Recommended for applications which require average speed • For mixing tasks with little or average viscosity • Blade size, 70 x 70mm • Material – stainless steel • Length – 450mm • Shaft diameter – 8mm • Max rpm – 800" Dimensions (L x W x H"): 12 x 14 x 2