ENHANCED COMPATIBILITY - Specifically designed for Vespid, Catta Ace, and Gnosis lenses, ensuring seamless integration and optimal performance across your entire lens collection. PRECISION EF-MOUNT - Provides a secure and reliable EF-Mount connection, maintaining image quality and lens stability for professional video and film applications. COMPLETE TOOL KIT - Includes 10x EF Bayonet, Port Cap, Shims Set, and Screwdriver, offering everything needed for lens maintenance and adjustments on set or in the studio. OPTIMIZED LENS ADAPTATION - Shims set enables fine-tuning of back focus, ensuring your lenses perform at their best, delivering sharp and clear images every time.