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Metal Super Knuckle shell with hex baby pin and thumb wheel, silver finish

Kupo

Kupo Super Knuckle System Hex Baby Pin

SKU CH-GMSW-6T9HT

A modular Super Knuckle shell with hex baby pin and 1/4″-20 thread locks both ball joints simultaneously and supports 17.6 lbs

  • Secure support for heavy rigs with 17.6 lb load capacity
  • Firm locking prevents unwanted movement during precise positioning
  • 5/8" stud and 1/4"-20 thread fit diverse gear
  • Single knob adjusts both ball joints simultaneously
  • Hex baby pin attaches to clamps and accessories

Kupo Super Knuckle with Hex Baby Pin

The Kupo Super Knuckle System with Hex Baby Pin is a modular support accessory designed for lighting and camera equipment. It uses a double-ended shell that holds two ball joints, tightened by a single central knob, giving complete freedom to position accessories. A hex baby 5/8in pin on one side attaches to clamps and grip gear, while a locking thumb wheel with a 1/4in-20 male thread on the other mounts cameras or accessories with female 1/4in-20 threads. The system supports up to 17.6 lbs.

Ideal for photographers

This system suits creators who want a single knob to lock both joints simultaneously and the ability to swap accessories on either end. It is not for buyers who need a fixed rigid arm without ball-joint articulation. It is also not for setups that require a load capacity above 17.6 lbs or a different thread size than 1/4in-20 on the camera side.

Check your gear before ordering

Verify that your clamp or grip accessory accepts a 5/8in hex baby pin. Confirm the camera or accessory you intend to mount has a female 1/4in-20 thread. Ensure the combined weight of your mounted equipment stays within the 17.6 lbs limit. No other mounting hardware is included.

How it compares

Measured against everything we stock in Photo Lighting & Studio Flashes, at today’s prices. Recalculated every night.

Price $61.99
Typical for this category: the median of 3,696 items is $57.99.

Specifications

No published specifications for this item yet.

Questions about this item

What equipment must I already own to attach the 5/8" hex baby pin to a light stand or clamp?

You need a light stand, C-stand, or grip accessory that accepts a standard 5/8" receiver, such as a convi-clamp or grip head, to mount the hex baby pin securely.

Will the 1/4"-20 male thread on the locking thumb wheel work with my older camera bodies that use the same standard tripod thread?

Yes, the 1/4"-20 male thread is an industry-standard size compatible with virtually all camera bodies and accessories featuring a female 1/4"-20 thread, regardless of age.

How can I verify the Super Knuckle is holding my 17.6 lbs load securely after I position it?

Tighten the central knob until both ball joints lock firmly; the rig should not drift or sag when you release it, confirming the mechanism is engaged.

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