4 Sizes Available: The boning caps are in 4 different sizes: 14x7x2.5mm(2mm hole, 5.5mm inner diameter), 14x9x2.5mm(2.2mm hole, 8mm inner diameter), 14x11x2mm(1.8mm hole, 9mm inner diameter), 14x12x3mm(2.2mm hole, 11mm inner diameter). Suitable for boning of different sizes. What You Get: Youll get 80pcs boning protector in 4 sizes, 20pcs for each size. Different sizes of boning caps can protect different types of fish bones, no need to bother to buy other items, our set can meet almost all your needs. Well Made: Made of resin material, lightweight and easy to clean. Comfortable to touch, grate craftsmanship. Theyre quite sturdy and durable, wont easily poked through by the bones themselves, can be used for a long time. Safe to Use: This black resin end cap can cover the cut end of the curved bone, it is safe to use and will not hurt your skin. With needle hole on the cover for needle to go through, the protector cover is quite convenient to use, even a beginner can get started quickly. Wide Application: The boning tip covers can be used for your most kinds of dress like wedding dress, evening dress, skirts, bridal gowns, etc. Can also be used for your underwear, swimsuit, hats, gowns, corset, etc.