Integrally combining a rectangular frame, torsion coil, and U-fork hook, the coil torque provides continuous clamping force for the elastic retention of banknotes, ID cards, and name badges.

Multi-axis precision cold-formed from SUS304 stainless steel wire in a single integral piece. The rectangular frame provides a wide, flat clamping surface to prevent banknotes or cards from bending; the multi-coil torsion spring stores continuous elastic energy for stable and uniform clamping force; the U-fork double-hook end creates symmetrical clamping points for more secure, non-shifting retention. Three length variants (small/medium/large) cover different banknote or card thickness requirements. The stainless steel body needs no surface treatment, with natural corrosion resistance and a clean polished appearance. Custom laser-engraved logos are also available, making this suitable for corporate gifts and industrial identification fixtures.