Kupo

Kupo KG090912 Double-Ended Spigot

5.0 (3 reviews)

Bridge any 5/8" baby pin receiver to a 1/4"-20 threaded accessory with this solid brass double-ended spigot built for the demands of professional production rigging.

$13.95*
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

In a grip package, the details that look least impressive on paper often matter most on set. The Kupo KG090912 Double-Ended Spigot is that kind of hardware — a solid brass adapter that bridges the 5/8" baby pin world of grip clamps and receivers to the 1/4"-20 thread standard of cameras and accessories. It exists to solve a specific rigging problem: you have a grip head or convi clamp mounted, and the accessory you need to attach — a small LED fixture, a monitor arm, a microphone holder — has a 1/4"-20 thread and nothing else. Without this spigot, your options are improvised. With it, you have a clean, professional interface that seats firmly in the receiver and holds the accessory at the angle you set.

The material choice is deliberate. Solid brass resists the thread galling and deformation that makes cheap aluminum spigots unreliable after a few hundred production days. The knurled neck is not decorative — it provides enough surface friction to hand-tighten to production-secure torque levels without reaching for a wrench, which matters when you're dressing a set quickly and need hardware that responds to your hands. The baby pin end seats without play in standard Super Convi Clamps and equivalent grip receivers, and the geometry is precise enough that there's no wobble or creep once tightened. This is the kind of small-format grip hardware you buy once, put in the bottom of the bag, and rely on for years.

Key Features

SPECIFICATIONS: Solid brass double-ended spigot featuring a 5/8" baby pin on one end and a 1/4"-20 threaded stud on the other with knurled neck for secure mounting.

DUAL INTERFACE DESIGN: Connects equipment with 5/8" receivers to cameras or accessories with 1/4"-20 threads.

SECURE BABY PIN FIT: 5/8" baby pin seats firmly in clamps and receivers for stable mounting.

KNURLED GRIP SURFACE: Knurled neck improves friction for secure tightening and adjustment.

DURABLE BRASS CONSTRUCTION: Solid brass build ensures strength, durability, and long service life in professional use.

Specifications

Material
Solid brass
End 1
5/8" (16mm) baby pin
End 2
1/4"-20 threaded stud
Grip Feature
Knurled neck for hand-tightening
Compatibility (5/8" end)
Super Convi Clamps and any standard 5/8" receiver
Compatibility (1/4"-20 end)
Cameras and accessories with 1/4"-20 thread

Pros & Cons

👍 Pros

  • Solid brass construction maintains thread integrity through thousands of insertion and removal cycles, resisting the galling and deformation that shortens the life of aluminum spigots under repeated use.
  • The dual-interface design — 5/8" baby pin on one end, 1/4"-20 on the other — solves a genuine rigging problem by bridging the two most common mounting thread systems in professional production.
  • The knurled neck section provides real hand-tightening torque, which speeds up rigging operations and reduces dependence on tools for basic setup and adjustment.
  • Compact form factor adds negligible weight and bulk to a grip bag while meaningfully expanding what can be mounted where on set.
  • Industry-standard thread sizing ensures compatibility across virtually the entire ecosystem of grip hardware, clamps, and camera accessories without adapter stacking.

👎 Cons

  • The solid brass construction makes this heavier than equivalent aluminum spigots — a minor consideration for a single piece, but noticeable when carrying multiples in a grip bag over a long day.
  • There is no locking mechanism or set-screw on the 1/4"-20 end, which means accessories subject to vibration or repeated adjustment may require periodic re-tightening to maintain secure positioning.
  • The single fixed geometry — baby pin to 1/4"-20 only — means it cannot serve as a 5/8"-to-5/8" or 1/4"-to-1/4" adapter, requiring separate hardware for other thread-bridging scenarios.
  • The knurled neck improves grip but does not provide a wrench flat, so applying maximum tightening torque with a tool is not practically possible without risking surface damage.

Frequently Asked Questions

One end is a 5/8" (16mm) baby pin — the industry-standard stud that seats in Super Convi Clamps, grip heads, and any standard 5/8" receiver. The opposite end is a 1/4"-20 threaded stud, which is the standard camera and accessory thread used across the industry for mounting monitors, lights, and accessories.
Solid brass offers the right balance of hardness and machinability for threaded mounting hardware. It resists thread galling (where threads seize and strip under load) better than aluminum, is lighter than steel, and resists corrosion without surface treatment. For hardware that is inserted, tightened, and removed repeatedly across productions, brass thread integrity outlasts aluminum alternatives.
The 1/4"-20 stud is rated for standard camera accessory loads. For lightweight accessories — small on-camera monitors, mini LED panels, microphone holders — the connection is secure when properly tightened. The knurled neck provides additional grip surface for manual tightening without tools, which speeds up rigging on set.
Functional. The knurled grip section allows you to hand-tighten and fine-adjust the spigot in a clamp or receiver with meaningful torque, improving clamping friction and reducing the chance of the spigot rotating under load during a shoot.
Yes — that is a primary use case. The 5/8" baby pin seats into any standard grip clamp or receiver, and the 1/4"-20 end accepts accessories that lack a baby pin attachment point, effectively bridging the two mounting systems. This is exactly the interface problem this spigot is designed to solve on set.