https://www.cnsteelfiber.com/products/glued-hooked-end-steel-fiber/ Glued hooked end steel fibre is made of high quality cold-drawn wire. The glued steel fiber in bulked could make sure it has good dispersibility in concrete. Compared with general concrete, steel fibre concrete has a great improvement in tensile strength, flextural strength, abrasion resistance, impact resistance, fatigue resistance, toughness, crack resistance and antiknock performance.