Product Packaging: Each package contains 100pcs of 0.5ml/cc 31Gx 6mm lab dispensing tools, and Each was individually packaged.safe and clean Precise Measurement: the lab measuring tool barrel is clear easy-to-read graduations for precise fluid measurement and control. Thin-wall design: thinner walls reduces the plunger force required and and consistent flow High-quality Material: made of industrial grade polypropylene plastic and stainless steel, sturdy and durable Widely Used: suitable for Industrial, scientific, laboratory and DIY, for dispensing, distribution and measurement of various liquids