JOBU SUREFOOT NX1 (3.5IN)Old reliable Surefoot NX1 Fits so many lenses, you should just have one! 3. 5" long plate is suitable for many smaller form factor lenses such as 70 200 and 300 F4 sizes. It has one (1) 1 4" 20 screw that slides back and forth in a track allowing for fitment to a variety of common lenses. A raised heel section can be pressed against the back of the lens foot to offer an anti twisting function. Made of 6061 T6 Aluminum, Hard black anodized Includes: 2x