1. Introduction
The NEEWER ST81 Super Clamp is a versatile and robust accessory designed for photographers and videographers. It provides secure mounting options for various equipment such as cameras, monitors, lights, and microphones. Featuring an adjustable jaw, cold shoe mount, and multiple threaded holes, this clamp offers flexibility for diverse setups.
This manual provides detailed instructions for the proper setup, operation, and maintenance of your NEEWER ST81 Super Clamp to ensure optimal performance and longevity.
2. Product Overview
Familiarize yourself with the key components of the NEEWER ST81 Super Clamp.

Figure 2.1: Overview of the NEEWER ST81 Super Clamp, highlighting the 360° locking knob, cold shoe mount, non-slip rubber pads, 1/4" locating pins and threaded hole, and 3/8" threaded hole.
- 360° Locking Knob: For quick and secure tightening of the clamp.
- Cold Shoe Mount: For attaching accessories like Speedlites, microphones, or LED lights.
- 1/4" Threaded Hole: Standard mounting point for various camera accessories.
- 3/8" Threaded Hole: Larger mounting point for heavier accessories or specific equipment.
- Non-slip Rubber Pads: Located on the inner jaws to enhance grip and protect surfaces from scratches.
- Adjustable Jaw: Allows clamping onto rods, tubes, crossbars, or flat surfaces.
3. Setup and Installation
Follow these steps to properly set up your Super Clamp.
3.1 Attaching the Clamp to a Surface
- Identify a Suitable Mounting Surface: The clamp is designed to fit rods, tubes, crossbars with a diameter of 0.7 - 2 inches (18-50 mm), or flat desks with a thickness of up to 2 inches (50 mm).
- Adjust the Jaw Opening: Rotate the red 360° locking knob counter-clockwise to open the clamp jaws.
- Position the Clamp: Place the open jaws around the desired rod, tube, or flat surface. Ensure the non-slip rubber pads are in contact with the surface to prevent slippage and protect against scratches.
- Secure the Clamp: Rotate the red 360° locking knob clockwise to tighten the jaws firmly onto the surface. Ensure the clamp is stable and does not move before attaching any equipment.

Figure 3.1: Adjusting the clamp jaw for different surface thicknesses. The clamp can open up to 2 inches (50mm) and close to a minimum of 0.7 inches (18mm).

Figure 3.2: Non-slip rubber pads provide enhanced clamping stability and surface protection.
3.2 Attaching Accessories
The Super Clamp offers multiple attachment points for various photographic and videographic accessories.
- Cold Shoe Mount: Slide accessories with a cold shoe adapter (e.g., Speedlite, microphone, LED video light) into the cold shoe slot on the clamp. Tighten any locking mechanisms on your accessory to secure it.
- 1/4" and 3/8" Threaded Holes: Use these standard thread holes to attach accessories such as magic arms, ball head arms, monitors, or cameras. Ensure the screw on your accessory matches the thread size (1/4" or 3/8") and tighten securely.

Figure 3.3: Example of a microphone mounted via the cold shoe mount on the Super Clamp.

Figure 3.4: A field monitor attached to the Super Clamp using a magic arm, demonstrating versatile mounting options.

Figure 3.5: A smartphone mounted to the Super Clamp, illustrating its use for mobile content creation.
Important: Always ensure that the total weight of the attached equipment does not exceed the maximum load capacity of 4 kg (8.8 lb) to maintain stability and prevent damage.

Figure 3.6: The Super Clamp supports a maximum load of 4 kg (8.8 lb).
4. Operating Instructions
The NEEWER ST81 Super Clamp is designed for straightforward operation. Once securely mounted and accessories are attached, no further operational steps are typically required for the clamp itself. Its primary function is to provide a stable mounting point.
For specific operational details regarding your attached equipment (cameras, lights, monitors, etc.), please refer to their respective instruction manuals.
Video 4.1: Product Overview Video. This video demonstrates the physical features and basic handling of the NEEWER Super Clamp, including its adjustable jaw and mounting points.
5. Maintenance and Care
To ensure the longevity and optimal performance of your NEEWER ST81 Super Clamp, follow these maintenance guidelines:
- Cleaning: Wipe the clamp with a soft, dry cloth after each use to remove dust, dirt, or moisture. For stubborn grime, a slightly damp cloth can be used, followed by immediate drying. Avoid harsh chemicals or abrasive cleaners.
- Inspection: Regularly inspect the clamp for any signs of wear, damage, or loose components. Pay close attention to the locking knob, hinge points, and rubber pads.
- Lubrication: The screw mechanism of the locking knob may benefit from a small amount of silicone-based lubricant if it becomes stiff over time. Apply sparingly and wipe off any excess.
- Storage: Store the clamp in a clean, dry environment away from extreme temperatures and direct sunlight.
- Rubber Pads: Ensure the non-slip rubber pads are clean and intact. If they become worn or detached, contact NEEWER support for replacement options.
6. Troubleshooting
If you encounter any issues with your NEEWER ST81 Super Clamp, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Clamp does not hold securely. |
|
|
| Locking knob is stiff or difficult to turn. |
|
|
| Attached equipment wobbles or feels unstable. |
|
|
If the problem persists, please contact NEEWER customer support.
7. Specifications
Detailed technical specifications for the NEEWER ST81 Super Clamp.

Figure 7.1: Package contents and key specifications of the NEEWER ST81 Super Clamp.
| Feature | Detail |
|---|---|
| Model | ST81 |
| Material | Aluminum alloy, stainless steel |
| Load Capacity | 4 kg (8.8 lb) |
| Maximum Jaw Opening | 2 inches (50 mm) |
| Minimum Jaw Opening | 0.7 inches (18 mm) |
| Mounting Points | Cold Shoe, 1/4" Threaded Hole, 3/8" Threaded Hole |
| Color | Red (locking knob), Black (clamp body) |
8. Warranty Information
The NEEWER ST81 Super Clamp comes with a 1 Year Manufacturer Warranty. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or improper maintenance.
Please retain your proof of purchase for warranty claims.
9. Customer Support
For technical assistance, warranty claims, or any questions regarding your NEEWER ST81 Super Clamp, please contact NEEWER customer support through their official website or the retailer where you purchased the product.
NEEWER Official Website: www.neewer.com
When contacting support, please have your product model (ST81) and proof of purchase readily available.