Wooden Camera Preston MDR3 / MDR4 Mounting Kit Ultra Arm v2

This mounting kit provides a robust articulating solution for attaching and positioning Preston MDR3 or MDR4 control units. It features 25 mm (1-inch) ball joints that allow flexible, three‑plane movement and precise orientation across your workflow setup.

One end includes a mounting bracket tailored for Preston units, while the other features a tool‑less 3/8‑16 knob with non‑slip rubber pads for secure, tool‑free adjustments. Two locating pins are included to convert the arm into a compatible ARRI accessory mount.

The Ultra Arm v2 boasts interchangeable components, enabling compatibility with 1/4‑20, 3/8‑16, NATO Clamp, Hot Shoe, and Super Clamp options. It also works seamlessly with many third‑party 25 mm ball systems for expanded versatility.

Key Features

• Ball Joint Articulation: 25 mm (1‑inch) ball joints allow flexible movement in three planes.
• Preston Control Unit Compatibility: Mounting bracket designed specifically for Preston MDR3 and MDR4.
• ARRI Accessory Mount Capability: Includes two locating pins for converting to 3/8‑16 ARRI accessory mount.
• Tool-less Adjustment: 3/8‑16 knob with non‑slip rubber pads enables quick adjustments without tools.
• Modular System: Components interchangeable with various Ultra Arm accessories (¼‑20, NATO, Hot Shoe, Super Clamp, etc.).
• Third‑Party Compatibility: Works with many existing 25 mm ball system accessories from other manufacturers.

Technical Specifications

• Weight: 0.7 lbs (317.5 g)
• Dimensions: 2" × 4" × 8" (50.8 × 101.6 × 203.2 mm)
• Package Weight: 0.435 lbs (~197 g)
• Box Dimensions: 4.75" × 3.6" × 1.6" (120.7 × 91.4 × 40.6 mm)

What's Included

• 1x Ultra Arm v2 articulating mounting kit
• 2x locating pins for ARRI accessory conversion