Kupo KCP-241B 40"""" Extension Grip Arm with Baby Hex Pin - Black

Kupo KCP-241B 40" Extension Grip Arm with Baby Hex Pin - Black — End-mounted baby hex pin for secure mini-boom accessory mounting

The Kupo KCP-241B is a 40" extension grip arm designed for mounting lights and accessories at the arm’s tip. At the end of the arm you will find a baby hex pin with six milled flat surfaces. This hex pin allows fixtures or accessories to be mounted like a small boom and provides stable attachment points for set-screws to lock into.

Design and construction

The arm uses a 40" length of steel tubing with a 5/8" (16 mm) diameter. The tubing surface is machined to create a rough texture, which helps prevent slipping during handling and adjustment. At the opposite end from the hex pin, the arm features a 2-1/2" grip head mounted on the tubing.

2-1/2" grip head features

The 2-1/2" grip head combines multiple mounting options and a robust clamping mechanism. It consists of a pair of rotating aluminum discs attached to a 5/8" receiver. Those discs contain four different-sized V-shaped jaws to accept common accessory studs and tubing sizes.

• The 2-1/2" grip head features an oversized ergonomic "T" handle and dedicated roller bearings designed for maximum torque.
• Allows mounting the light fixtures or accessories on the end of the grip arm like a mini boom.
• The discs have four different sized "V" shaped jaws to accept any accessory with a 5/8", 1/2", 3/8", or 1/4" mounting stud.
• Limited two-year warranty.

How the jaws and locking work

The V-shaped jaws include teeth that grab whatever is positioned between the plates, providing a secure hold. In addition, accessories mounted on the baby hex pin will not rotate when a set-screw from that fixture or accessory locks onto one of the flat sides of the hex pin. The grip head uses a non-slip aluminum friction disc designed to maintain durability and provide positive locking strength over time.

For added durability, the grip head is constructed around a solid steel central stift with a fixed solid pin securing it to the aluminum casting. This construction supports precise control while the dedicated roller bearings reduce friction when applying torque with the T-handle.

Typical use cases

1. Mounting small lights or accessories at the end of the arm to act as a mini boom.
2. Securing accessories with a range of common stud sizes using the V-shaped jaws.
3. Quickly adjusting and locking position with the ergonomic "T" handle and roller bearings for reliable clamping.

FAQ

Question: What is the purpose of the baby hex pin at the end of the arm?
Answer: The baby hex pin provides six flat surfaces for a set-screw on a fixture or accessory to lock onto, allowing you to mount lights or accessories at the arm’s tip and to use the arm as a mini boom.

Question: Will accessories mounted on the hex pin rotate under load?
Answer: No. Accessories will not rotate when the accessory’s set-screw locks onto one of the hex pin’s flat sides, providing a stable attachment point.

Question: What mounting stud sizes does the grip head accept?
Answer: The rotating aluminum discs include four V-shaped jaws that accept accessories or studs sized 5/8", 1/2", 3/8", and 1/4".

Question: How does the grip head ensure secure clamping and durability?
Answer: The grip head uses toothed V-jaws, a non-slip aluminum friction disc, dedicated roller bearings, an oversized ergonomic T-handle for torque, and a solid steel central stift fixed into the aluminum casting for strength and long-term durability.

Question: Is there a warranty for this product?
Answer: Yes, the Kupo KCP-241B comes with a limited two-year warranty.