Package Includes: You will receive 3 sizes of metal spiral bone tips, 50pcs per size, 150pcs in total. Various sizes can meet your different needs, and the adequate quantities can provide you with the possibility to make a large number of productions. Size Detail: These spiral bone end caps have 3 sizes of 7x5x2.5mm (0.28x0.2x0.1 inch), 7.5x6x2.5mm (0.3x0.24x0.1 inch), 9x7x3mm (0.35x0.28x0.12 inch), you can choose the right size you need, and creat beautiful and eye-catching customes. Function: These caps are specially designed to keep the cut ends of the spiral bone from harming fabrics and helps the boning slide easily into the channel. You just need to use the needle nosed pliers to crimp them onto your boning, easy to operate. Material: Spiral bone tips are made of 304 stainless steel, which is strong and sturdy, corrosion resistant and rust resistant. The surface is smooth, won't cause any damage to your fabric or skin, high durability can provide long-lasting service for you. Wide Application: These steel boning end tips are widely used to make spiral bones for your costumes, corsets, underwears, wedding dresses, dance wears, hats, garlands, crafts and more, help your clothes to achieve good support and shaping effect.