Made of T316 Marine grade stainless steel, its design is not only strong, but also beautiful and practical. Specially designed wrench tool, three fastening jaws, convenient installation of cable railing, two accurate marking holes, ensure accurate spacing of guide holes, improve installation efficiency and aesthetics. In addition, our square head screws, left or right hand, can tighten the cable in the same direction, effectively avoiding cable deformation and damage, making DIY cable railing project simple and efficient. Various sizes, suitable for 2 "x2", 4 "x4", 6 "x6" and other specifications of the wood column, thread length, diameter and hole size and other fine parameters, to ensure that each screw can be accurately inserted, provide up to 580kg drawing strength, for your safety escort. The streamlined design, whether straight lines, stairs or angled sections, can be easily navigated, creating a safe and aesthetically pleasing railing system. Includes 30 pairs of left and right pressure square head screws, 2 multi-function wrench tools, 2 free drill bits and a comprehensive user manual to meet your installation needs. We recommend that you use a two-person collaboration during the installation process to ensure a smooth process. At the same time, please note that these crimping lag screws need to be used in conjunction with a dedicated crimping tool for optimal fixation. Color: silver.