Outside Diameter: 8mm ( 5/16 inches ); Screw Diameter: 4mm; Length: 38mm.
Weight: Each piece about 6.5 g / 100 grain.
Made of tough, rust-resistant steel with a black zinc finish. Good hardness and durable.
Easy to replace and operated. Black color tips screw-in target/hunting arrows.
24 Piece per Pack. Great for practice and target use.