20 pieces Made of 304 stainless steel 4x1mm Hole 0.5mm Surgical stainless steel has advantages such as being hypoallergenic, durable, scratch-resistant, easy to clean, and resistant to rust and discoloration. I also have various other parts for sale. Please take a look (＾∇＾) If you purchase several items, please comment before purchasing. I will offer a combined shipping discount. Combined Shipping Discount 2 items: 50 yen off 3 items: 60 yen off 4 items: 70 yen off 5 or more items: 100 yen off Packaging is simple and may use recycled materials. Please note that we are not responsible for loss or damage after shipping. These are imported goods. There may be small scratches, scuffs, chips, burrs, color unevenness, and irregularities in shape. Please refrain from purchasing if you are sensitive to these issues.