The Makita Drill Chuck #MK-193319-5 is designed for use with models DS4000, DA4000LR, and DA4031. This keyed drill chuck has a mounting size of 3/8-24 and is suitable for various drilling applications. The Makita brand ensures quality and compatibility with their power tools, providing users with a reliable and efficient tool holding solution for their workholding needs in CNC, metalworking, and manufacturing settings.