BLACKHAWK! 154001SL-BlackHawk blades BHB40 Large Folding Pocket Knife ( 3.75" Stainless Steel Tanto Plain Blade) The Blackhawk! BHB40 is a large folding knife with a 3.75" stainless steel modified tanto blade. The injection-molded nylon handle scales are textured with the Blackhawk! logo. The scales are nested over the steel lock back frame for a clean look. The pocket clip is four-way reversible.