RUBYCA 500 Sets 21mm Black Gunmetal Cat Claw Studs and Spikes - DIY

In this review the RUBYCA 500 Sets 21mm Black Gunmetal Cat Claw Studs and Spikes are evaluated for leathercraft makers and DIY decorators who need a large, consistent supply of decorative screwback findings. The bottom line: this pack is aimed at crafters who want a bold punk or rugged look and value quantity and consistent finish; the single biggest reason to buy is the volume and uniform black gunmetal appearance that speeds up multiple projects without constant reordering. Reviewers also note the studs are straightforward to fit and come neatly organized.

Key Features

• Large kit: 500 sets provide enough studs for many projects so crafters can complete bags, belts and jackets without frequent restocking.
• Durable material: Zinc alloy construction gives a solid, metal feel that holds up on accessories and gives a consistent finish.
• Screwback design: Slotted screw type makes these findings easy to attach and remove with basic tools, simplifying repairs and changes.
• Distinctive style: Round base cat claw spikes in black gunmetal deliver a punk or rugged aesthetic that enhances leather accessories and garments.
• Compact sizing: At 21mm height with a 7mm base diameter these studs are small enough for detailing yet prominent enough to make an impact.
• Organized packaging: The set comes in a RUBYCA zip-bag so components stay sorted and ready for the next project.

Who It's For

This kit is best for hobbyists and small-batch makers who work on leather accessories, dog collars, shoes, belts and punk style garments and who value having a large, uniform set of findings on hand. It suits crafters doing multiple items or frequent repairs where matching hardware matters.

It is less suitable for someone who needs very large individual spikes, a different finish or proprietary fasteners; if exact screw length or a different base diameter is critical, check fit on a sample piece before committing a whole project to these studs.

Pros & Cons

Pros

• Excellent value for volume, supplying 500 sets so projects can be completed without interruption.
• Good workability and ease of use thanks to the slotted screwback design that fits basic hand tools.
• Attractive black gunmetal finish that many customers praised for looking high quality and realistic.
• Comes packaged in a zip-bag which keeps parts organized and reduces loss during work sessions.

Cons

• Some buyers reported the size was smaller than expected, so the 21mm height may look modest on large items.
• A few customers noted screw length should be verified for thicker leather or layered materials before full installation.

Specifications

Package contents	500 sets of cat claw spikes with screws
Material	Zinc alloy metal
Color	Black gunmetal
Spike size (height)	21mm (0.82 in)
Base diameter	7mm (9/32 in)
Screw type	Slotted screwback
Packaging	RUBYCA zip-bag

Our Verdict

The RUBYCA 500 Sets cat claw screwback studs are a practical purchase for leatherworkers and DIY crafters who need a large, consistent supply and a stylish black gunmetal finish. They represent strong value, are easy to fit with basic tools and come well organized, though buyers should confirm screw length and scale for thick or oversized projects.

Frequently Asked Questions

Are these studs easy to install?
Yes. The slotted screwback design allows installation with common screwdrivers and basic tools; a pilot hole in leather helps alignment.

Will they fit thick leather or layered materials?
They work for many leather projects, but the screw length varies; test on a scrap to ensure the screw reaches and secures properly for thicker materials.

What finish and size are they?
They are black gunmetal color, 21mm height with a 7mm base diameter, and made from zinc alloy metal.