Product description Lindapter HB Hollo-Bolt: Lindapter HB Hollo-Bolt is an innovative connection for steel structures. Made of the highest quality materials, class 8.8 / 010.9 / A4, ensuring reliability and durability. Available in a variety of coatings including electroplated zinc [ZN] and hot-dip zinc [HDG] to meet a variety of needs. The perfect solution for construction professionals, ensuring quick and solid installation. Lindapter HB Hollo-Bolt is a guarantee of safety and stability of steel structures. Discover now in the Steel Structures category.