SMALLRIG 1798 Baseplate with Dual 15mm Rod Clamp
Attach it to the tripod plate with a 3/8"-16 screw and 1/4"-20 screw, then you can mount your dovetail base plate on it.
It clamps onto 15mm rails for accessories attachment, such as follow focus, matte box, etc.
The 40mm groove makes it possible to balance a front heavy camera on your tripod properly.
Package Includes:
2x Base Plate
2x 15mm Rail Block 840
1x 1/4''-20 Screw
1x 3/8''-16 Screw
1x Spanner