INNOREL QV160 2-Piece Sliding Quick Release Plate (50mm) for Manfrotto 501PL Series Fluid Heads

The essentials

If you’re using a video fluid head and you want a faster, cleaner way to mount your camera, a sliding quick release plate is one of those accessories you only miss when it’s not set up properly. The INNOREL 2 Pieces QV160 Sliding Quick Release Plate is built to replace or match the kind of sliding plates used with the Manfrotto 501PL series rapid connect system (on paper, not a random QR plate).

It also includes both 1/4" and 3/8" mounting screws, so it’s aimed at DSLR, mirrorless, and other camera setups that support standard tripod mounting points. The aluminium alloy build and the anti-slip rubber pads suggest it’s designed to stay stable under typical rig movement and handling—nothing exotic, but clearly made for day-to-day shooting.

Where it stands out

The biggest reason to consider this plate is compatibility focus: it’s described as working as a replacement for Manfrotto 501PL Series rapid connect sliding plates, with a 50mm width. That “replaceable sliding plate” angle matters, because with quick releases, the shape and width are often what determine whether it’ll slide in and lock the way you expect.

A second practical win is the dual-screw approach. Having both 1/4" and 3/8" screws gives you flexibility across different camera mounting standards. In use, it means less faffing around with adapters for the common camera types you’d likely pair with a fluid head.

And it’s not just metal and screws. The plate includes four anti-slip rubber pads to improve stability and help protect the camera body from scratches or abrasion. There are also anti-drop protrusions on the bottom, which is a sensible detail if you’ve ever had a plate hit the floor during a swap.

Quick overview of what you get

This is sold as a 2-piece set of sliding quick release plates, with a stated 50mm width. The mounting interface uses standard 1/4" and 3/8" screws, and the overall body is made from aviation aluminium alloy with CNC technique, positioned as lightweight yet sturdy and durable.

One limitation to flag: the description makes the compatibility case around the Manfrotto 501PL series (and mentions certain INNOREL systems). If your fluid head uses a different QR standard or a different plate width, this may simply not be the drop-in replacement you’re hoping for.

How to decide if it’s a good fit

It makes sense if you already own a video fluid head that uses the Manfrotto 501PL series rapid connect sliding plates, or if you’re specifically replacing a sliding plate in that system and want the same general form factor.

You’ll like it if your camera can mount using either 1/4" or 3/8" screws, because that’s the core connection method here. For many mirrorless/DSLR rigs, that’s exactly the scenario.

It may not suit you if your setup needs a completely different quick release type (different locking mechanism or plate geometry), because the stated 50mm width and the “501PL series” replacement positioning are the foundation of this product’s claim.

What you should double-check before buying

Take five minutes to confirm a few things first. These are the sort of details that prevent disappointment:

• Plate width and style: this is stated as 50mm width and described as a sliding quick release plate replacement for 501PL series rapid connect sliding plates.
• Your screw mount: the plate supports 1/4" and 3/8" screws—check what your camera actually uses.
• System fit: since compatibility is described in terms of specific series, don’t assume it will work with every QR ecosystem.
• Your handling habits: the rubber anti-slip pads and anti-drop protrusions are helpful in real life, but it’s still worth tightening properly and swapping with care.

Practical use example

Imagine you’re on location and you switch between two bodies. With a sliding quick release setup like this, you mount the plate to the camera, then slide it into the fluid head’s rapid connect area and lock it down. When you change rigs, you’re not fiddling with a tripod screw each time—just removing and inserting the plate. Over a long shoot day, that convenience adds up.

It’s not “hands-free magic”, though. If the system alignment or locking mechanism isn’t a match for your head, you’ll notice it immediately when trying to slide and secure the camera.

Pros

• Designed as a replacement/match for 501PL series rapid connect sliding plates (50mm width)
• Includes both 1/4" and 3/8" mounting screws for common camera setups
• CNC-machined aluminium alloy build aimed at durability
• Anti-slip rubber pads help stability and reduce contact wear on the camera body
• Anti-drop protrusions are a thoughtful safety detail

Cons

• Compatibility is fairly system-specific, so it may not be a universal QR solution for every head
• If your camera or rig doesn’t suit the 1/4"/3/8" screw approach, you may need extra parts (not included here)

Is it worth it?

It’s worth buying if you want a sliding quick release plate set that’s positioned to work with the Manfrotto 501PL series rapid connect sliding plate system and you value quick swaps for DSLR/mirrorless-style rigs. The dual-screw mounting and the anti-slip pads make it feel geared towards everyday shooting rather than occasional use.

You should probably skip it if you’re not using a compatible sliding QR system, or if your head requires a different plate width/geometry. In quick release land, one “almost” compatibility can turn into a frustrating fit-check every time you use your kit.