An indexable parting blade comprising: opposing blade first and second sides ; a blade peripheral edge connecting the blade first and second sides ; a central index axis AI extending through the center of the blade first and second sides ; first, second and third insert pockets located along the blade peripheral edge ; and first, second and third coolant channels ; the first coolant channel comprising a first inlet , at least one first outlet opening out to the first insert pocket , and a first channel portion extending between the first inlet and the at least one first outlet ; the second coolant channel comprising a second inlet , at least one second outlet opening out to the second insert pocket , and a second channel portion extending between the second inlet and the at least one second outlet ; and the third coolant channel comprising a third inlet , at least one third outlet opening out to the third insert pocket , and a third channel portion extending between the third inlet and the at least one third outlet ; characterized in that the at least one first outlet comprises a first rake outlet opening (56B1) out to a rake side of the first insert pocket and a first relief outlet opening (56B2) out to a relief side of the first insert pocket; and the first inlet is located further from a furthermost point of the first insert pocket than at least one of (a) the second inlet and (b) the central index axis AI. opposing blade first and second sides ; a blade peripheral edge connecting the blade first and second sides ; a central index axis AI extending through the center of the blade first and second sides ; first, second and third insert pockets located along the blade peripheral edge ; and first, second and third coolant channels ; the first coolant channel comprising a first inlet , at least one first outlet opening out to the first insert pocket , and a first channel portion extending between the first inlet and the at least one first outlet ; the second coolant channel comprising a second inlet , at least one second outlet opening out to the second insert pocket , and a second channel portion extending between the second inlet and the at least one second outlet ; and the third coolant channel comprising a third inlet , at least one third outlet opening out to the third insert pocket , and a third channel portion extending between the third inlet and the at least one third outlet ; the first coolant channel comprising a first inlet , at least one first outlet opening out to the first insert pocket , and a first channel portion extending between the first inlet and the at least one first outlet ; the second coolant channel comprising a second inlet , at least one second outlet opening out to the second insert pocket , and a second channel portion extending between the second inlet and the at least one second outlet ; and the third coolant channel comprising a third inlet , at least one third outlet opening out to the third insert pocket , and a third channel portion extending between the third inlet and the at least one third outlet ; the at least one first outlet comprises a first rake outlet opening (56B1) out to a rake side of the first insert pocket and a first relief outlet opening (56B2) out to a relief side of the first insert pocket; and the first inlet is located further from a furthermost point of the first insert pocket than at least one of (a) the second inlet and (b) the central index axis AI. <EOS>