Roller Cone Reamers provides performance reliability and dependability platform to gain the advantage of roller reamer application. The cutters feature a pressure equalized lubricated bearing system. The seals prevent the ingress of mud and cuttings into the bearing. It ensure the sealed system works effectively in high pressure down hole environments. It provide a low torque point of stabilization where the roller cutters roll around the hole wall and reduces the torque, stick slip and the resultant vibration. It provides less hole wall damage. The reduction of stick slip, allowing more constant rotation of the barrel together with the reduced vibration is contribute to the coring performance. It offers the reliability and performance to achieve more benefits.