Fits small and large pipets. Filler features a white polypropylene attachment containing a silicone conical adapter that gently seals around pipets without twisting. Pipette does not contact hard plastic, which reduces the risk of cracking and chipping. Just squeeze the bulb, press pipette lightly into soft adapter, then relax the bulb to draw liquid. Comes with handy elastic band for hanging on reagent bottle or wrist. Filler fits standard size pipets. Autoclavable. Measures 41mm diameter by 107mm length.