Polypropylene handle to permit extended use without fatigue PTFE plunger assures smooth, consistent operation in repetitive tasks Dispensing volume can be adjusted by turning the knob at the base of the unit Accuracy is ±0.5% Teflon™ Tip With chemical resistance because the fluids only contact the borosilicate glass and Teflon Luer Lock Supplied with chrome-plated steel Luer lock fitting, complete with removable cannula for general use