The A2031 multi function block features a different strap than the A2030, serving as the base in various options such as A2031F, A2031SC, and double or triple versions. Its multi function head is specifically designed for attaching our swivel, fork, and cheek adaptors, as well as riveting onto the ultra-straps. Dynamic Blocks utilize a patented bearing system with twin rows of stainless-steel ball bearings on a stainless-steel rail, providing exceptional load-bearing capabilities and long-lasting durability. The 20 & 30mm blocks feature a large central rivet for reduced weight and a rope-friendly attachment point, making it ideal for use in a cascade system.