The Metal hub is made from nickel plated brass. Needles are available from 33 to 10 gauge. This hub makes the most rigid connection to the needle making it perfect for repetitive septum piercing. Metal hub needles are compatible with PTFE Luer Lock (TLL) syringes. All needles are sold in six-packs and the standard needles are 51 mm long. For all custom needles, the length and point style will need to be specified prior to placing an order.