Presenting a fast release pipetting device for precise pipetting & zip quick emptying. The Knurled thumbwheel can be rotated to draw up or dispense liquidswhile the releaser may be pushed in for zip- quick emptying. The moulded chuckhas a silicon rubber collet inside to hold various pipettes of standard sizes. It resistsacids & alkalies and can be easily disassembled for thorough cleaning. Material: Acrylonitvile Butandiene Styrene