A practice katana, often referred to as a "iaito" or "mogito," is a training sword specifically designed for the practice of iaido, a Japanese martial art focused on the drawing, cutting, and resheathing of the katana.

Unlike a functional or sharp-edged katana, a practice katana is not intended for cutting or combat purposes. It is typically an unsharpened, blunt-edged sword with a dull or rounded tip. The blade of a practice katana is often made of a softer steel or alloy that is less prone to chipping or damage during training.

The primary purpose of a practice katana is to allow practitioners to safely practice iaido techniques, including drawing the sword (nukitsuke), performing cuts (kiri or tameshigiri), and resheathing the sword (noto). The focus is on correct form, precise movements, and mindfulness rather than actual cutting or striking.

Practice katanas often have a traditional appearance and are similar in shape and size to a real katana. They may include a saya (scabbard) and tsuba (guard) to replicate the handling characteristics of a functional sword. The weight and balance of a practice katana are designed to approximate that of a real sword, allowing practitioners to develop proper technique and control.

It's important to note that the use of a practice katana in iaido or other martial arts training should always be done under the guidance of a qualified instructor. Safety precautions and proper handling techniques should be followed to minimize the risk of injury during practice.