4Inch Hikoki TCT Saw Blade is a cutting blade specifically designed for use with handheld circular saws or power tools that accept 4-inch blades. Hikoki, formerly known as Hitachi Power Tools, is a reputable manufacturer of power tools and accessories. The TCT saw blade features teeth made of tungsten carbide, a hard and durable material that is ideal for cutting through various materials, including wood, plywood, laminates, and certain plastics.