Da oblique brads series Gauge: 15 Diameter: 1.84mm Head: 3.00mm*1.83mm Length: 38mm--64mm Degree: 34° Material: Steel wire Plastic strip brads series Diameter: 2.87mm/3.33mm Length: 55mm--90mm Shank: Smooth, screw, ring Material: Iron wire Paper strip brads series Diameter: 2.87mm/3.33mm Length: 55mm--90mm Degree: 28° /34° Shank: Smooth, screw, ring Material: Iron wire