Use these needles for penetrating extra thick woven fabrics, denims, or quilts with minimum needle deflection, reduced risk of needle breakage and skipped stitches. For use with topstitch, heavy, multiple, or poor quality threads. These needles are the perfect sewing partners for your next needlework project! Details: Chrome 2.25'' x 3.7'' package size Professional grade Imported Contents: 5 jean/denim needles ( size 100/16)