Removable (RN) needles can be used with Hamilton removable (RN)-style syringes and connectors. Standard needle length is 2" / 51 mm. These removable (RN) needles are supplied in convenient six packs. Custom lengths and point styles are available. Several different needle point styles are offered on Hamilton syringe and needle products depending on the application. Point Style 2 is a beveled, non-coring needle point recommended for septum penetration. Point Style 3 has a Blunt needle point for use with HPLC injection valves and for sample pipetting.