Customized angled nose cone for isoflurane or other gas anesthesia delivery to a stereotaxic frame. Based on measurements from WPI #502053 (Mask, Gas Anesthesia, Mouse; manual here). Used for surgeries requiring neck angles (e.g. intracisternal magna injection or CSF collection). Designed to fit on the WPI 502063 mouse/neonatal rat adaptor (held via 5 mm x 5 mm cubic bar inserted into end). Recommended printing in resin or finishing with coat of epoxy or similar to ensure airtight.