Diamondback 360, CSI ViperWire Orbital Atherectomy Guide Wire, REF: GW14335FRM. Sterilized with Ethylene Oxide. Manufactured for Cardiovascular Systems, Inc., St. Paul, MN 55112, USA. The ViperWire atherectomy guide wire has a shaft diameter of 0.014" and is constructed of stainless steel with a smooth finish and is silicone coated. The spring tip configuration is atraumatic, radiopaque, and can be bent to form a steerable system.