Wheaton E-Z Crimpers ™ feature a cushioned ergonomic handle that aids in reducing hand fatigue. Crimper size is now labeled for quick identification. Other features include polished crimping jaws for consistent sealing, a short handle and redesigned spring assembly that further helps reduce hand fatigue. Works with the Wheaton Crimpmaster Crimping Station. An adjustable stop allows user to determine the tightness of the seal while maintaining consistent crimping. 8mm, 11mm and 13mm models feature tapered jaws for easier vial access in rack. Can be autoclaved at 121°C, but autoclaving may change the appearance and or reduce product life.