The Accumax SMART multichannel pipettes are fully autoclavable with a lightweight and ergonomic body for a hassle and pain-free pipetting experience while maintaining unmatched accuracy and precision. Fully Autoclavable, Variable Volume, Ergonomic & Light Weight Design, Smooth Plunger Mechanism Offers Least Resistance For Ease-of-use And Long Hours Of Pipetting, High Accuracy And Precision Guaranteed, Easy Click Stop Volume Setting, Two Step Plunger Operation Allows Forward & Reverse Pipetting Technique.