Medium Hollow Ground Guthook Skinner 440C Stainless Steel has been heat treated to about a 58c on the Rockwell Hardness Scale and polished to a mirror finish. Overall length is 9". The blade is 4" long, 1-1/2" wide, and 3/16" thick. Two 1/8" bolster pin holes, three 3/16" pin holes, and 1/4" thonghole. CRYOGENICALLY TREATED to enhance its edge holding properties. Fits SHE3