Filler features a white ABS attachment containing a silicone conical adapter that gently seals around pipettes 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 pipettes. Autoclavable. Measures 41 mm dia x 107 mm L. Pack of 3.