Material: The metal part of stopper beads is made of stainless steel, these beading and jewelry making stoppers are designed for repeated use. The materials are sturdy and built to last and withstand all beading projects, light weight and easy to use. Wide Application: If you can't bead from a spool, you can use a bead stopper to keep things from apart.They hold wire, beading wire, fine thread like Wildfyre, , silk, elastic cord or almost anything you can use. Use: Ideal for jewelry making, Use to squeeze of the bead into the bead plug to prevent the bead from falling. They are compatible with a wide range of beads. Size: This set contains 6pcs mini bead clamps. The bead stopper 32mm wide, 20mm long, 12mm thick, inner size: 8mm. Prevent beads from falling, making DIY bracelets necklaces easier. Gift: for those around you who enjoy making handmade jewelry, spring clamp is a very practical accessory that can save effort and time when making handmade crafts. Whether it's a holiday or anniversary, it be a thoughtful gift.