"New" Notched and Heat Treated Spring Steel Shank to Skip the Slip when using an extension Interchangeable custom heat treated drill designed for organic material 1-Inch by 54-Inch drill bit, 1/4-Inch by 36-Inch extension, and allen wrench included Add a Quick Switch Hex to adapt to a Quick Change chuck, part number ETHXKIT250 Made in the USA Minimal flexibility in 1/4-inch by 54-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 underground. Our dirt auger system is an economical and less labor intensive way to install cable and sprinkler systems under existing sidewalks and drives or place landscape stakes. 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. Three flat grip and notch on the chuck end. Wire fishing accommodation holes in the head and shank. 1-inch head diameter, 1/4-inch shank diameter, overall length of the bit is 54-inch. This Kit also comes with our 1/4-inch by 36-inch long extension. This extension has an internal Hex so it can be used with any 1/4-inch cable bit OR any 1/4-inch hex shank quick change tool.