Case of 100 (25/bx, 4 bx/cs) BD 405182 BD Quincke Spinal Needle, 20G x 3½" Yellow These spinal needles feature a lightweight plastic hub to minimize cannula deflection and associated stylet fallout. The key/slot arrangement of the stylet and cannula hub facilitates proper needle bevel orientation. A color-tinted window hub allows for easier visualization of CSF. Needles are packaged sterile and are for single use only. Caution: Federal (USA) law restricts this device to sale by or on the order of a physician. Sterile, single use http://catalog.bd.com/bdCat/viewProduct.doCustomer?productNumber=405184