8Sinn Metabones EF Support Adapter for Sony a7SIII Cage Key features: – Aluminum made – 4 mounting screws   Compatibility: Metabones Canon EF/EF-S Lens to Sony E Mount T CINE Smart Adapter (Fifth Generation) Link: https://www.metabones.com/products/details/MB-EF-E-BT6 Dimensions: Height: 16mm, Width: 41mm, Length: 13mm, Weight: 7g Set includes: 1pc 8Sinn Metabones EF Support Adapter for Sony a7SIII Cage