I have a Yard Hook also its one beefy knife,I believe the thickness to be around .285" actual cutting edge is more like 6.5in. then theres the choil.Horn Dog was good enough to point me to the company order page where you can order a 6" sheath and with some modification will fit the Hook.Mod meaning cutting a notch in the Kydex insert for the Hook part so the blade fits all the way in.Oh and welcome Desertdog to the forum! (and kiss your spare cash g'bye) <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />