"New" Notched and Heat Treated Spring Steel Shank to Skip the Slip when using an extension Aggressive and self feeding auger point Add a Quick Switch Hex to adapt to a Quick Change chuck, part number ETHXKIT187 Made in the USA Compatible with 3/16-inch shank extensions, part numbers EX18736, EX18736X, EX18752, and EX18752X. Best flexibility in 72-inch shank "Skip The Slip" with Eagle Tool's NEW line of cable bits. These bits are uniquely designed with a notch in the shank to prevent the bit from slipping out of an extension and being lost inside the wall. Used with our Quick Switch Hex adaptor this notch will prevent the annoying slip in the chuck. Made in the USA, these bits are as tough as it gets. Our ultra sharp threads give this bit the best pulling power available. It moves quickly through some of the hardest woods Mother Nature can put in it's way. Three flat grip and notch on the chuck end. Wire fishing accommodation holes in the head and shank. 9/16-inch head diameter, 3/16-inch shank diameter, and overall length is 72-inch.