The ETTCO No 1E Machinist Drill Chuck is a high-quality drill chuck with a tapered mount for secure and precise drilling. Made in the United States by Ettco, this keyless chuck is designed to hold drills ranging in size from 1/8" to 5/16". Perfect for CNC, metalworking, and manufacturing applications, this drill chuck ensures stability and accuracy in your workholding and toolholding needs. With its durable construction and reliable performance, the ETTCO No 1E Machinist Drill Chuck is a top choice for professionals in the industry.