The Benchmark Scientific BT1011 Orbi-Shaker XL Orbital Shaker with Flat Mat Platform, 115V offers flask capacity that far exceeds most benchtop models. With a large 18 x 18 inch platform and a powerful, beltless motor drive, the BT1011 is capable of mixing up to five 2L flasks or nine 1 L flasks simultaneously. The included, non-slip rubber mat platform is ideal for low speed applications, while the convenient MAGic Clamp™ platform is also available for high speed mixing of Erlenmeyer flasks, tube racks or microplates. The MAGic Clamp™ allows for instant flask clamp exchange without the use of tools, screws or any other hardware.