YF Butterfly Training Knife Matte Finished Stainless Steel Scale Flick with Safety Folding Practice Trainer Tool for Sport Hiking Outdoor Indoor, 8.9-Inch Overall

4.1-inch 3Cr13Mov stainless steel matte finished training tool, 3mm thickness. Stainless steel matte finished handle,10mm thickness and 4.8-inch length. It is a good helper of daily training. No sharpened,no offensive blade. Unique design, comfortable feeling in hand. Harmless for green hand. It's well for beginners to learn with. Flip smoothly like a professional man without worrying about be hurt. Dull blade style training knife and tool. No offensive at all.