Multilever low-k probe for accurate micro-rheology and quantitative nanomechanical mapping of living cells, tissues, hydrogels. • Tailored for mechanical and micro-rheological • measurements on soft samples in liquid • Controlled 1um end radius and calibrated spring • constant for quantitative nanomechanical data • 23 micron long tip shaft for artifact free • and accurate measurements even on tall cells • 6 levers, 0.01-0.5N/m spring constants, all calibrated • One pack of 5 probes