Field Tool Supply's Drill Sleeve 1 Hole-4 OD is a versatile tool designed for enhancing drilling operations. With a 4-inch outer diameter, this drill sleeve is compatible with various drill bits and machines, ensuring optimal performance. Constructed from high-quality materials, it offers durability and reliability in demanding applications. The design allows for easy installation and secure fit, making it suitable for both professional and DIY projects. This drill sleeve is essential for achieving precise drilling results and improving overall efficiency in your machining tasks.