This Competition Red Line Thrower Set of three throwing knives is made for the fast and accurate Martial Arts competition arena, where you are judged by both speed and accuracy. The round accessory attached to each 8.45 inch knife is an adjustable counter weight that can be moved to and from along the length of the blade to adjust the weight according to your throwing style. Each blade is finished in black with the red accent. Comes with a sheath or pouch that attaches to your arm or leg with a velcro strap. Also, a hex key tool is included to adjust the counter weight. Specifications Overall Length: 8.45 Inches Blade Length: 4.75 Inches Blade Material: 420 Stainless Steel Blade Thickness: 3.125mm Tang: Full Tang Sharpness & Functionality: Slightly Sharp Edges, Piercing Point, Competition Precision Throwing Knives Blade Features: Fully Adjustable Counter Weight Handle Length: 3.75 Inches Handle: Steel, 8 Hole Cutouts, Red Line Design Other Features: Allen Hex Screw for Tightening the Counter Weight Position Includes: Allen Hex Key Tool, Arm Pouch for Speedy Competition Throwing Finish: Black w Red Accent