Kupo KCP-390 off Camra Flash Spring Clamp

Kupo KCP-390 Off Camera Flash Spring Clamp – Securely Mount Flashes to Round and Flat Surfaces

Quick summary

The Kupo KCP-390 is a spring clamp purpose-built for off-camera flash use. It combines a sturdy Alli clamp body, a steel ball head and an adjustable aluminum cold shoe so you can mount and position your flash quickly on both round and flat surfaces. The clamp supports direct connection to light stands and umbrellas through its stud and threaded sockets.

Key features and benefits

• Alli clamp body with a sturdy steel ball head for flexible flash positioning.
• Includes a 5/8" baby stud tapped with a 3/8"-16 female thread and a baby receiver on the rear of the clamp for secure accessory mounting.
• Adjustable aluminum cold shoe accepts different flash sizes and provides longer-lasting operation compared to plastic shoes.
• Internal strong spring steel lets you attach the clamp easily and reliably to planks or tubes from 5–40mm.
• 16mm stud with 3/8” thread hole and attached sockets allow connection to light stands and umbrellas.
• Holes in the clamp are specifically designed for umbrella mounting.

How it mounts and connects

You can attach the clamp to round tubing or flat surfaces in seconds thanks to the strong spring steel inside. The rear baby receiver and the 5/8" baby stud tapped with a 3/8"-16 female thread provide standard mounting points. In addition, the 16mm stud with a 3/8” thread hole and the included sockets let you connect common light stands or umbrella shafts directly to the clamp.

Materials and durability

The clamp is constructed with solid steel and uses an aluminum cold shoe for increased durability compared with plastic shoes. The steel ball head gives stable, repeatable flash positioning while the spring steel mechanism maintains a firm grip on the surface you mount to.

Specifications

Use cases

Use the KCP-390 to position an off-camera flash on set, on-location, or in a studio where you need a quick, temporary mount. It works well when you need a durable cold shoe, a reliable clamp on pipes or boards, and the ability to connect to stands or umbrellas without adding extra adapters.

FAQ

Question: Can I mount this clamp to round pipes and flat wood surfaces?
Answer: Yes. The internal strong spring steel lets the clamp attach securely to both round tubing and flat planks within the 5–40mm range.

Question: What mounting options are available for lights and umbrellas?
Answer: The clamp includes a 5/8" baby stud tapped with a 3/8"-16 female thread, a baby receiver on the rear, and a 16mm stud with a 3/8” thread hole. These allow direct connection to light stands and umbrella shafts; the clamp also has holes designed for umbrella use.

Question: Is the cold shoe durable enough for regular use?
Answer: Yes. The adjustable cold shoe is made from aluminum, which offers longer-lasting operation compared with plastic cold shoes and supports different flash sizes.

Question: What is the maximum load the clamp can handle?
Answer: The clamp has a loading capacity of 2kg (4.4lbs), which is suitable for most compact off-camera flashes and similar accessories.