Kupo KS-399 Super Knuckle 6"""" Double Socket Arm with Knob

Kupo KS-399 Super Knuckle 6"""" Double Socket Arm with Knob – Ultra-versatile mounting and positioning

The Kupo KS-399 Super Knuckle features a double socket arm with a ball head at each end and a single centre knob that locks both ends. It provides an ultra-versatile solution for mounting and positioning camera gear, lighting, monitors and mobile devices. The centre knob secures the ball heads quickly and allows fast repositioning when needed.

Key features

• Double socket arm with a ball head in each end, locked by the centre knob.
• Die-cast aluminum alloy construction for a sturdy yet lightweight unit.
• Standard Dia. 26mm ball heads with hard anodized, serrated surfaces for improved grip and weather resistance.
• Shell design includes two side deeper cuttings to offer a greater tilt-down angle.
• Built-in silicon rubber sleeve holds the unit together while changing the ball head.
• Interchangeable double sockets and ball heads for a wide range of applications.

Design and materials

The knuckle is constructed from a die-cast aluminum alloy for strength without excessive weight. Additionally, the ball heads use a hard anodized, serrated finish which improves how the shell grips the ball and enhances resistance to weather. A built-in silicon rubber sleeve keeps the unit together during ball head changes, making maintenance and adjustments safer and more controlled.

Applications

Use the KS-399 wherever flexible mounting and secure positioning are required. For example:

• Lighting rigs and accessories
• Camera mounting and support systems
• External monitors and displays
• Tablets, smartphones and other mobile devices

Because the double sockets and ball heads are interchangeable, you can adapt the knuckle to suit different setups and accessories across these categories.

Dimensions and capacity

The knuckle balances compact size with a practical load capacity for many accessories. Refer to the specification table for the measurable dimensions and capacity below.

FAQ

Question: What holds the Super Knuckle together when I change a ball head?
Answer: A built-in silicon rubber sleeve holds the unit together while you change the ball head, keeping parts aligned and reducing the risk of components separating during maintenance.

Question: How much weight can the KS-399 support?
Answer: The knuckle has a loading capacity of 8kg, suitable for many small cameras, lights, monitors and mobile devices within that limit.

Question: Are the ball heads weather resistant?
Answer: Yes. The ball heads feature a hard anodized and serrated surface, which improves grip with the shell and provides weather resistance.

Question: What kinds of devices can I mount with the double sockets and ball heads?
Answer: The double sockets and interchangeable ball heads allow mounting of lighting, camera gear, monitors, tablets, smartphones and other mobile devices, offering flexible configurations for various setups.