Syringe, Polypropylene, Luer Slip, 20mL, Offset Tip, Non-Sterile, Bulk. Dispenser packs of non-sterile syringes make sense. They're more economical and easier on the environment. These all polypropylene syringes are latex-free and contain no rubber or silicone. The plastic plunger has a smooth draw and a positive safety stop to prevent accidental spills. The 20mL sizes have a luer tip which is offset from the barrel. Pictured are the luer slip and luer lock styles, for reference.