Magnetic Button Clasps Snaps Fastener Clasps for Sewing, Craft, Purses, Bags, Clothes, Leather 40 Sets (18mm, 4 Colors) Review (2026)

What's in the pack

This pack contains 40 complete sets of 18mm round magnetic snap clasps made from hard alloy metal, divided evenly across four finishes, bronze, gun black, silver, and gold, with 10 sets in each color. Each set includes the two halves of the magnet plus the washers needed to back them, since a magnetic snap depends on trapping enough material between the front piece and its washer to hold the magnet's pull. The clasps are marketed for sewing, craft, purses, bags, clothing, and leather projects, and the kind of quick attach and release action they offer makes them a common choice for closing bag flaps, wallet interiors, and garment plackets where a zipper or button would be slower to use.

How the magnetic hold works day to day

Once installed, an 18mm magnetic snap gives a firm, immediate closure with a simple push together and pull apart action, no fumbling with a button through a hole or aligning a zipper pull. This size sits in the middle of common magnetic snap sizes, strong enough to keep a mid-size bag flap shut through normal handling but not so large that it becomes bulky on smaller accessories like wallets or pouches. Because the closure is magnetic rather than mechanical, there are no moving parts to wear out or jam over time, which is an advantage over some button or hook closures on pieces that get opened and closed many times a day, such as an everyday tote or crossbody bag.

Matching hardware and finish considerations

Splitting the pack across four finishes, bronze, gun black, silver, and gold, means a single purchase can match whatever other hardware, zippers, buckles, or rivets, a maker already has on hand, rather than committing to one finish for every project. This is convenient for hobbyists working on a variety of pieces, but it also means only 10 sets of any one color are included, which is a real constraint for anyone making a production run of matching bags in a single finish. Buyers planning a batch of identical bags in, say, all gold hardware should expect to need at least one additional pack to avoid running short partway through a run, rather than relying on this assortment alone.

Reinforcing thin leather or fabric

Magnetic snaps rely on enough rigid material between the front disc and its washer to grip properly, which means thin or soft leather and lightweight fabric can flex or tear around the prongs without extra reinforcement. Adding a scrap of stiff interfacing, a leather patch, or a second washer behind the installation point spreads the load and helps the snap sit flat instead of pulling through over time. This is a standard step for magnetic hardware generally, not a flaw unique to this kit, but it is worth planning for before installing a snap on anything softer than a mid-weight leather or canvas, since retrofitting reinforcement after the prongs have already been bent is much harder than adding it up front.

Value for bag makers

For the price, a 40 set pack across four finishes gives hobbyist bag and accessory makers enough variety to outfit several different projects without buying single color packs repeatedly. It suits makers experimenting with different hardware looks or maintaining a stock of assorted clasps for custom orders more than it suits a shop producing one style of bag at volume in a single finish, where the 10 sets per color will run out quickly. Paired with basic reinforcement on thinner materials, these clasps offer a straightforward, no-sew way to add a secure closure to bags, pouches, and leather goods, and remain one of the more practical low cost options for that job.

Frequently asked questions