Purpose and benefit Grip head designed to connect an extension arm to a light stand quickly and securely, so you can add boom arms, reflectors, flags, or other accessories without re-rigging the stand. Eliminates wobble and simplifies setup, letting you focus on positioning and shooting instead of hardware adjustments. Key features Four mounting hole sizes (4 mm / 11 mm / 15 mm / 16 mm) for broad compatibility with common extension arms and accessories. Angle-adjustable joint gives precise positioning and flexible equipment placement. Strong locking system provides reliable stability and safety under load. What this solves Saves time by providing an easy, repeatable connection point between extension arms and light stands. Reduces gear drift and accidental movement during shoots by locking the arm securely in place. Allows one stand to serve multiple purposes (boom, flag arm, reflector holder) simply by swapping or repositioning the extension arm. Compatibility and sizing Use with extension arms and accessories that mount using 4 mm, 11 mm, 15 mm, or 16 mm mounting holes. Works with standard light stands when the stand or accessory accepts the corresponding hole sizes. Performance and safety Angle adjustment and a robust locking mechanism maintain position under typical studio or location loads, improving reliability on set. Designed to provide stable, repeatable support for lighting and grip equipment. Typical use scenarios 1. Studio lighting: attach a boom arm to a light stand to position a key light or softbox over a set while the grip head keeps the arm locked at the desired angle. 2. On-location shoots: mount reflectors or flags on an extension arm for precise control of light spill and shadows; the locking system prevents slippage during long sessions. 3. Multi-purpose rigs: convert a single light stand into a support for modifiers, small backgrounds, or camera-mounted accessories by changing the extension arm without swapping stands. Why choose this grip head Straightforward connection and clear compatibility with four common mounting hole sizes make setup predictable and fast. Angle adjustability and a secure lock deliver the placement flexibility and stability professionals need.