An advanced version of the Colt Maxicut. The lip-and-spur drill centre point is fully adjustable in length and guarantees exact and true boring. The extendable wood twist drill serves as a centering tip and for control, allowing high-precision cuts even at angles. The centre point can be removed to allow quick and easy resharpening of the main cutting edges. These bits also feature RotaStop functionality, allowing easy changing of tools and optimum torque transmission without slippage. Universally extendable through RotaStop extension.