Fallkniven PHK Thermorun Handle Plain Zytel Sheath FK-PHKZ. This Knife from the product specialists at Fallkniven features a 5.00 in. 3G steel blade 4.40 in. thermorun handle and comes complete with a zytel sheath. For an amazing way to make sure you are using the blade for all of your specifications take a look at the Fallkniven PHK Thermorun Handle Fixed Knife. Specifications for Fallkniven PHK Thermorun Handle Fixed Knife: Manufacturer: Fallkniven Serrated: Plain Included Accessories: Zytel Sheath Blade Finish: Steel Handle Color: Black Handle Finish: Thermorun Features of Fallkniven PHK Thermorun Handle Fixed Knife: 5.00 in. 3G steel blade 4.40 in. thermoruhandle Package Contents: Fallkniven PHK Thermorun Handle Fixed Knife Fallkniven FK-PHKZ: PHK Thermorun Handle Plain Zytel Sheath