Kind:Through-link needle,pen needle,piping needle Specification: 21G,22G,23G Character: Through-link needle and pen needle 1)the uniquely sharpened faction simplifies penetration of tissue. In comparison with other common needles, painful trauma is considerably reduced. 2)the special design of robber protection jacket reduces the contamination risk in that the distal end of the needle is immediately covered and protected from following removal of the blood. 3)The specially sharpened point results in minimal tissue damage and thromboplastin seepage. 4)The needle coating ensures smooth and gentle penetration when the needle is pierced into the patient vein. Piping needle Compare to the two type of needle before, it has more benefits , for example, Flexible wings improve needle pierce during blood collection and infusion procedures. Translucent shield improves users control of the blood collection and infusion procedures. Packing:50pcs/bag,1200pcs/ctn Weight:G.W.3.7kg/ctn,N.W.2.7kg Dimension:470mm*380mm*216mm