Description: Easy to installation, fit directly into the chuck of any cordless or electric power drill. Convenient for using. Using a flexible drive enables you to take your power tool to the most inaccessible places. It can used with polishing kits, drill bits, wire brushes, countersinks, flap wheels, mounted stones and grinding wheels. Specification: Material: Plastic+Metal Color: Black Length: 100cm (39") Interface size: M19 x3 mm Package Includes: 1 Piece Flexible Shaft 1 Piece L key Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you