31g 8mm bd viva pen needles box of 90All BD Viva pen needles are designed to improve comfort, and now you can prescribe the same BD quality and reliability you expect from all Viva needles Compatibility BD Viva pen needle is compatible with leading pen injection devices. Electro polished, surgical grade steel Manufactured with an electro polished, surgical grade needle designed for smoothness. Micro bonded lubrication Designed with proprietary micro bonded needle lubrication for less