Replace a damaged, lost, or broken duct knife sheath with this Estwing certified replacement sheath. Created from the same molds as the original sheathes, this replacement features the same hard nylon construction in bright, hi-viz Estwing blue to offer the same level of protection from bumps and impacts that happen when moving about in an active construction area. The hard shell design also provides protection against accidental punctures that happen with traditional woven fabric sheathes. A molded in retention button clips into the knife to keep it secure during active movement while still allowing the knife to be easily drawn for use. An attached belt clip on the sheath allows it to hang from both everyday wear belts as well as thicker work and tool belts. Designed to fit the Estwing 5.5-Inch Fixed Blade Double-Edged Multi-Purpose Duct Knife.