Wings at luer lock flange assure perfect fit on all syringes. Specifically designed for use in animals, featuring a stiffer, stronger aluminum hub than standard needles with aluminum hub. Sterile, single use and latex-free.Features and benefits special bevel grind specifically designed for use in animals. Color coded needle sheath allows for easy of needle gauge. Aluminum luer lock hub provides very secure fit needle can be manipulated with less chance of breakage compared to epoxy design heat stake cap-to-sheath seal provides visible and audible tamper evidence sterility before use assures user confidence rigid polypropylene hard pack protects against accidental product contamination and provides particulate free in a rigid color-coded cartridge: Brown orange = 14 gauge, White = 16 gauge, Green = 18 gauge, Light Green = 19 gauge, Pink = 20 gauge, Blue = 22 gauge, Red = 25 gaugesold individually.