Material: High carbon Steel and plastic handle Gear design: so they can make out orderly roles on the leather,Besides, you can use them without paying too much timeIt is convenient and durable to use Easy and safe to use: make out orderly holes on the leatherIts handle is comfortable to hold.Widely used in leather craft and sewing for overstitch marking / spacing Suitable for leather, paper and cloth craft etc .Good for transfer markings from pattern onto fabric with or without tracing paper, this sewing tool also makes slotted perforations Total length:18cm/6.90inch ;Tip length: 4mm/0.16inch; Gear width with tip: 2.5cm/1inch