Kupo

Kupo KG604012 4in Super Viser Clamp

5.0 (2 reviews)
4in

Mount lights and accessories securely on tubes or planks up to 101mm with the Kupo 4in Super Viser Clamp.

$66.95*
In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Kupo KG604012 4in Super Viser Clamp End Jaw is a professional-grade grip clamp designed for use on film sets, photo studios, and live event productions. Its aluminum die-cast body strikes a balance between strength and weight, providing enough clamping force to hold lighting fixtures and accessories securely while remaining practical to carry and position on set. The defining feature of this clamp is its grooved alignment shaft, which ensures both jaws track together in the same direction as you tighten, eliminating the uneven pressure and slipping that can occur with conventional clamp designs.

With a jaw capacity of up to 101mm, the Super Viser Clamp accommodates standard pipes, truss sections, and flat planks commonly found in production environments. Rubber pads on the jaw faces protect surfaces from marring and improve grip. The integrated 16mm receiver socket makes the clamp Convi Clamp compatible, enabling quick attachment of additional Kupo grip accessories without the need for separate adapters. Whether you are rigging a light overhead or clamping a flag to a stand, the KG604012 provides a dependable hold with straightforward operation.

Key Features

SPECIFICATIONS: 4" Super Viser Clamp end jaw with aluminum die-cast body, movable jaws, grooved alignment shaft, and Convi Clamp compatibility.

PROFESSIONAL CLAMPING STRENGTH: Designed for mounting on tubes or planks with secure holding power.

ALIGNED JAW MECHANISM: Grooved shaft keeps jaws moving in the same direction during adjustment.

CONVI CLAMP READY: Built-in socket accepts compatible Convi Clamp accessories.

DURABLE GRIP DESIGN: Rubber pads protect surfaces while maintaining strong hold.

Specifications

Brand
Kupo
Model
KG604012
Clamp Type
Super Viser Clamp End Jaw
Jaw Capacity
Up to 101mm
Body Material
Aluminum die casting
Pin/Socket Size
16mm
Jaw Pads
Rubber
Jaw Alignment
Grooved shaft

Pros & Cons

👍 Pros

  • Grooved shaft mechanism keeps jaws aligned for even, reliable clamping pressure
  • Aluminum die-cast body delivers professional-grade strength at a manageable weight
  • Rubber-padded jaws protect mounting surfaces from scratches and damage
  • Built-in 16mm socket provides direct compatibility with Convi Clamp accessories

👎 Cons

  • Maximum 101mm jaw capacity may be too narrow for larger structural beams or set pieces
  • Does not include a spigot or mounting stud, requiring separate grip accessories for light attachment
  • Single-clamp design means repositioning requires fully loosening and re-tightening each time
  • Heavier than spring clamps, which may matter when mounting on lightweight or temporary structures

Frequently Asked Questions

The Super Viser Clamp opens to accommodate tubes or planks up to 101mm (approximately 4 inches) wide.
The clamp has a built-in 16mm socket that accepts Kupo Convi Clamp accessories, allowing you to attach additional grip hardware directly without adapters.
The grooved alignment shaft ensures both jaws move in the same direction when you tighten the clamp, preventing misalignment and providing even clamping pressure across the surface.
The jaws are fitted with rubber pads that protect the mounting surface from scratches and marring while maintaining a strong, slip-resistant hold.