Medical Insulin Pen needle Needle type: 29G 30G 31G Sterile, Non-toxic, Non-pyrogenic Standard: ISO13485 & CEp; CEp; CE Product Description 29G(0.33)*1/2'(12mm)(12mm) 30G(0.30)*1/4'(6mm);(6mm) 30G(0.30)*1/3'(8mm);(8mm) 31G(0.25)*1/4'(6mm);(6mm) 31G(0.25)*1/3'(8mm);(8mm) Compatible with all available pen models Optimum treatment with maximum simplicity Sterile, Non-toxic, Non-pyrogenic Double point system Patient Point with triple beveling for easy and atraumatic Cartridge point sharpened for a perfect punch with no fragmentation Easy flow of medication without any impurities.