This IRWIN 3/8" Rotary Drill Bit 5026009 is a high-quality tool perfect for your woodworking needs. Made with tungsten carbide, it is durable and built to last. Its deep spiral flute design ensures a smooth and efficient drilling experience. With a size of 3/8 inches and an overall length of 4 inches, this drill bit is perfect for masonary work. It is manufactured in China and has not been modified in any way. This item is a great addition to your woodworking supplies and is sure to get the job done efficiently.