Luer-Lock Hub Material: Plastic (Polypropylene)Canula (Needle) Material: Stainless Steel (Type 304)Canula Length: 1/2" [0.5"] - 12.7mmCanula Inner Diameter (ID): 0.022" (0.558mm)Canula Outer Diameter (OD): 0.033" (0.838mm)International Color: GreenPackage Size: 50 p/bx - or - 1000 p/bag (Specify Above)