Twinbore (2 cutting edges) and Tribore (3 cutting edges) provide a range of heavy duty rough boring tools which enable high metal removal to yield increased productivity while maintaining levels of accuracy which in most cases will eliminate the need for semi-finishing operations. Whether used in the standard or step boring arrangement, the rigid design has proven successful in the machining of bores with noncentral cores and Tribore is ideally suited to the machining of bores with interrupted cuts where the rugged construction is essential to absorb the resultant cutting forces. • Twinbore boring range 28mm to 1,015mm. • Tribore boring range 48mm to1,015mm. • Each cutting edge can be independently adjusted for accurate setting of the bore size.