The Vario 2000 is a Helko Werk patented design - using a German engineered fastening system that introduces incredible versatility and efficiency. All Vario heads, handles, and fastening components are fully interchangeable and inter-compatible. The heads are assembled with bolts which are driven through the handle and secured by a back-plate retainer cap. A steel overstrike protector covers the front of the assembly and offers front and side protection to the handle. The hex bolts are keyed to a standard Allen wrench, which is supplied with every axe. The product line is comprised of 5 different blades and 3 handle lengths, covering all applications and giving the user the unparalleled ability to mix and match components to create the right tool for the task at hand.