FIDLOCK V-BUCKLE Magnetic Fastener combines a magnetic closure with a secure mechanical locking system, making it well-suited to building tree-climbing equipment connections where a quick, reliable connection is required. Originally developed for high-load applications such as baby carriers, the self-securing design becomes harder to open as the load increases, while remaining simple to release by pulling the tab on the metal flap. Integrated magnets guide the male and female components together, automatically aligning and snapping the buckle securely into place without the fiddling associated with conventional fasteners. Compact and intuitive to operate, the V-BUCKLE is particularly useful on knee ascender systems and other climbing accessories, and is the magnetic buckle used in the Arbpro Gemini Knee Magnetic Upgrade Kit.