Black, rust-resistant size-1 snaps suited to medium-light projects. The 9 mm diameter adds security on plackets and pockets without bulk, especially on darker garments where a matte look is preferred. Each card contains ten complete sets for multiple pieces or a coordinated repair kit. Install with small, even stitches through the outer holes to keep the closure flat and comfortable against the body while maintaining a clean finish on the right side of the garment.