Uses:The closest, most comfortable Sensor twin blade shave. 1. Soft, protective microfins: gently set up your beard so the blades can shave you closer with incredible comfort. 2. Self adjusting twin blades: automatically adjust to every curve of your face and safely respond to every detail of your skin. For the best Sensor shave, try the Gillette Sensor3 triple blade shaving system. The closest, most comfortable Sensor shave ever. All Sensor cartridges fit all Sensor razors.