The ARRI ARB-1 attaches to the Accessory Adapter of SMB and LMB matte boxes or to the Accessory Rail Small. It offers a 3/8″-16 mounting point with four holes for safety pins and a lever lock that turns 90°.
Used to attach articulated arms, distance meters (e.g. Cinetape) or small monitors close to the optical axis. Safety pins prevent accessories from rotating during a shot.
Ideal for
Why ARRI Accessory Rail Bracket ARB-1
- No rolling – Four holes for safety pins secure accessories.
- Quick lock – An integrated lever locks the rail with a 90° turn.
- ARRI system – Compatible with existing SMB/LMB accessories.
- Compact – Adds no bulky parts to the matte box.
Key specs
| Type | Accessory rail holder for matte box |
|---|---|
| Mount | for SMB/LMB Accessory Adapter and Accessory Rail Small |
| Compatibility | ARRI SMB and LMB matte boxes |
Construction
| Mounting point | 3/8″-16 with 4 holes for safety pins |
|---|---|
| Locking | integrated lever (90°) |
| Manufacturer marking | K2.0019444 |












