Crop Needle Set With Mixing And Storage Tube Package Contains: One Of Each: 8 Gauge, 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge. Stainless Steel Needles With Rounded Ball Tip For Use In Administering Fluids And Food To Animals. Luer Lock Fittings Suitable For Most Commonly Used Syringes.