Needles are ultra-sharp and designed specifically for animal use. Metal insert increases needle strength. Tri-beveled, anti-coring tips are computer ground for consistent sharpness. Feature anti-friction coating for minimal penetration resistance and animal discomfort. Regular wall stainless steel cannula for durability and breakage prevention. 
Individually packaged in color-coded cartridges:  White = 16 gauge, Pink = 18 gauge , Yellow = 20 gauge, Gray = 22 gauge.