This sheath is precision sewn and made of very high grade 8/9 oz. cowhide with a welt in the seam so the blade does not cut the threads. It is soft enough so that most handles will slide in for final water fitting. Belt loop is cut from the leather and folded back and sewn. Fits blades BL411, BL412, BL483, BL545 and many more. Opening is 1-7/8" wide, and 7" long.