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Kupo

Kupo KG602311 Foamcore Clamp for Grip Head

★★★★★4.5 (6 reviews)

Mount foamcore boards to any standard grip head quickly and securely with Kupo's steel U-clamp and spike pin system.

$35.95*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Kupo KG602311 Foamcore Clamp is a specialized grip accessory designed to solve a common on-set challenge: securely mounting foamcore boards for use as reflectors, flags, or diffusion panels. Built from steel with a black coating, the clamp features a U-shaped channel that accepts 1-inch thick foamcore, while two spike pins — conveniently attached with strings to prevent loss — press into the foamcore surface to lock it firmly in place. This anti-slip system ensures that your panel stays put even during repositioning or when catching wind on outdoor shoots.

Attachment to your grip setup is handled through two chrome-plated steel studs measuring 0.4 inches (10mm) in diameter, which slot directly into any standard grip head. At just 8 ounces and measuring 3 x 3 x 4 inches, the KG602311 adds minimal weight and bulk to your kit while providing a reliable, repeatable way to mount foamcore. Whether you're flagging light, bouncing fill, or creating negative fill on a photo or video set, this clamp eliminates the improvised tape-and-clamp solutions that slow down production.

Key Features

SPECIFICATIONS: Foamcore clamp with U-shaped steel construction, Silver-plated stud, and spike pins for mounting 1" thick foamcore boards.

SECURE FOAMCORE MOUNTING: Holds foamcore panels firmly for use as reflectors or flags.

GRIP HEAD COMPATIBILITY: Silver stud connects directly to standard grip heads.

ANTI-SLIP PIN SYSTEM: Included spike pins help lock foamcore in place during use.

SIMPLE STEEL DESIGN: Durable construction supports repeated professional use.

Specifications

Brand
Kupo
Model
KG602311
Design
U-shaped steel with black coating
Stud Type
Two chrome-plated steel studs, 0.4" (10mm) diameter
Spike Pins
Two spike pins, string-attached
Foamcore Thickness
1" (2.54cm)
Material
Steel
Color
Black
Dimensions (L x W x H)
3 x 3 x 4 inches
Weight
8 ounces

Pros & Cons

👍 Pros

  • U-shaped steel construction provides a strong, durable grip on foamcore panels
  • Spike pin system actively prevents foamcore from slipping during use
  • Pins are string-attached to the clamp body so they won't get lost on set
  • Chrome-plated studs offer direct compatibility with standard grip heads
  • Compact and lightweight at just 8 ounces for easy transport in a grip kit

👎 Cons

  • Only accommodates foamcore boards at exactly 1-inch thickness
  • Does not include a grip head — must be purchased separately
  • Limited to foamcore material; not versatile enough for other board types like gatorboard or plywood
  • Small 3 x 3 x 4 inch form factor means it grips a narrow section of the board edge

Frequently Asked Questions

The Kupo KG602311 is designed specifically for foamcore boards with a 1-inch (2.54cm) thickness.
The clamp features two chrome-plated steel studs with a 0.4-inch (10mm) diameter that connect directly into a standard grip head receiver.
The included spike pins press into the foamcore surface to prevent it from slipping or rotating in the clamp during use. They are attached to the clamp body with strings so they don't get lost.
The clamp is constructed from steel with a black coating, built to withstand repeated professional use on set.
The clamp is specifically designed for 1-inch foamcore. Other materials of similar thickness may fit, but the spike pins are optimized for penetrating foamcore surfaces to provide a secure hold.

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