1. Size: 14 Gauge. 2. Color: Olive. 3. Tip length: 6.5 mm, 1/4 inch. 4. Inner Diameter 1.40 mm; Outer Diameter 1.81 mm. 5. Blunt / Flat end (not sharp end), stainless steel tips. 6. High precision, burr-free polished. 7. Threaded luer lock; color-coded polypropylene hubs.