The SmallRig Baseplate with Dual 15mm Rod Clamp 1674 is a versatile and lightweight base plate that is compatible with many popular camera models, including the Sony FS7, Sony A7 series, Canon C100/C300/C500, etc. It attaches to the camera via a 3/8″-16 or 1/4″-20 screw, and features 15mm diameter rod holes that are spaced 60mm apart. This allows you to mount a follow focus, matte box, lens support or other accessory onto the rig, without adding extra weight or bulk. The 1/4”-20 & 3/8”-16 threads on the bottom of the base plate also provide compatibility with a wide variety of tripod heads