[Self locking design strap] The black strap has a self-locking mechanism for easy operation. Simply insert the curved tip into the head, the smooth edge can quickly and evenly shrink, and the locking teeth can fix the tie at the desired length. The self-locking mechanism of the tie is very reliable, with strong locking force and difficulty in loosening The maximum tensile strength of nylon ties (300mm x 7.6mm) can reach 70KG. The tensile strength is determined by the width. Our black tie is widened (0.3 inches/7.6mm), combined with high-quality materials, and has a higher tensile strength than other smaller tie widths The black tie is made of sturdy modified nylon 66 material, which is very sturdy. The tie has cold resistance and heat resistance, with a working temperature of -25°C to+85°C. The tie is not only weather resistant, but also UV resistant, suitable for outdoor use. UV resistant straps are durable and ensure perfect fixation of items for extended periods of time, even under extreme conditions Indoor and outdoor ties: UV resistant ties can be used indoors or outdoors, suitable for homes, gardens, offices, garages, workshops, factories, sheds, etc. Black tie is the perfect organizer for your life and work [Quality Assurance] You can obtain: 300 sturdy black ties. Size: 300mm x 7.6mm high-quality tie bracket is handmade to help you quickly organize and stabilize items. Colour:Black Material:nylon Size:7.6x300mm Package Contents: 300 x Cable Zip