The Front Runner Axe Mounting Bracket is a safe and secure option for traveling with your long handled axe.Bolts slide in to the slot of a Front Runner Slimline II side rail or can be adapted and bolted to other racks or surfaces.Axe head is protected in steel cage.2mm (0.078") Black powder coated steel.Can accommodate most axe sizes.Mounting requires axe handle to have hole diameter of 12mm (0.5").