TM-7543 ZAMBEZI BACK-UP WITH 3 1/4" PLAIN EDGE AUS-8 STAINLESS STEEL BLADE. 4 3/4" CLOSED. BLACK ZYTEL HANDLE SCALES WITH STAINLESS STEEL BOLSTERS. METAL POCKET CLIP Timberline 7543 Zambezi Backup, PlainEdge. The Timberline Zambezi Back Up Knife was designed by Greg Lightfoot. The Zambezi Back Up has a 3.20" drop point blade made of AUS8 stainless steel. The bead blasted blade has a top swedge, dual stepped Kraton insert thumb studs for ambidextrous one hand opening, and a texture notched thumb ramp. The open frame handle, 4.75" closed, is built for strength with massive stainless steel liners, liner lock and Torx screw construction. The handle is contoured with a deep finger choil; it has a stainless steel bolster, and Zytel scales. Includes a drilled stainless steel pocket clip that is recess mounted at the butt end. Open length: 8.10". Weight: 7.0 ounces.