The Milescraft 1318 DrillMate Portable Drill Guide is a versatile attachment designed for use with a drill press. With a 3/8 inch chuck size and keyed chuck type, this drill guide allows for precise and controlled drilling. The set includes one attachment, and the item is manufactured by Milescraft, a trusted brand in power tools. The compact size of 16"L x 5.5"W x 18"H and lightweight design of 3.5 lbs make it easy to transport and store. Ideal for various drilling projects around the home or workshop, this drill guide provides accuracy and efficiency.