Features:This miniature hand drill is an ideal tool for holding small jobs， holds drill bits and reamers etc.Fits securely and comfortably in the palm of your hand.Use it as simple as a screwdriver.Comes with chuck key.Specification:Chuck: 0.3-4mmSize:overall length 90mmHead:head(Plastic)Package Included:1pcs 0.3-4mm mini hand drill chuck with key