This comprehensive set offers 300 pcs safety pins, thoughtfully assorted into 5 different sizes to cater to a myriad of tasks, from everyday fixes to specialized craft projects. Package also includes 30 pcs of sewing clips in assorted colors with a storage case. Mr. Pen safety pins are made of anti-rust steel and are wear-resistant and wash-resistant. Do not worry about easy discoloration. The safety pins for clothes are enough supply for you and your family's daily use. The clip opens wide to 0.55", holds layers of fabric, and the clip base is flat for easy feeding to the presser foot. The ends of the safety pins remain locked and cover the sharp end to protect your fingers from accidents. Large safety pins stick quickly into the fabric and do not cause damage or large holes.