M6/M8/M10/M12 Colored zinc-plated four-piece gecko expansion pipe pull burst expansion bolt heavy-duty three or four-piece gecko for Construction & Fixing

Our Colored Zinc-Plated Heavy-Duty Gecko Expansion Bolts are professional fasteners designed for high load-bearing and long-term use. Available in M6 to M12 sizes (including M6, M8, M10, M12), they come in 3-piece or 4-piece gecko sets, featuring pull-burst expansion pipe design.

 

Crafted from high-quality carbon steel with a colored zinc plating finish, they offer excellent corrosion resistance and wear resistance, effectively preventing rust and oxidation even in harsh environments. The pull-burst expansion structure ensures a tight and stable fit, making them ideal for construction, wall mounting, equipment installation, and other heavy-duty fixing scenarios.

 

Each bolt undergoes strict quality control, with precise sizing and smooth threading for easy installation—no additional tools required for assembly. They are widely used in building construction, industrial equipment fixing, and heavy-duty installation projects, providing reliable and durable fastening performance.