Corodrill is an equipment that is useful for secure drilling in materials that are difficult to undergo chipping. The device has a rigid design and has implemented latest technologies in padding and insert. The device is capable of providing excellent control over chipping and also can provide higher process security. The device is highly flexible and is rigid with three pads attached to it. It can deliver improved performance by making use of the latest pad and insert technology. It is possible to adjust the tool without making use of the tool - room service. It has improved the design of coolant channel and also that of the chip mouth.