SERIES QHU Backdraft BACKDRAFT PLUNGE CUTTERS Plunge Coolant D2 K H 2° D1 .45 Cutter Number D1EffectiveDiameter# ofInserts HHeight D2BoreDiameter KKeyway RetentionBolt OptionalCoolantBolt QHU-20015D1R01 2.000 5 1.570 0.750 0.31 SD-06-46 SD-06-89 QHU-20015D1R02 2.000 4 1.570 0.750 0.31 SD-06-46 SD-06-89 QHU-25015D1R01 2.500 5 1.570 0.750 0.31 SD-06-46 SD-06-89 QHU-30017D3R01 3.000 7 1.750 1.000 0.38 SD-08-46 SD-08-92 QHU-30017D3R02 3.000 5 1.750 1.000 0.38 SD-08-46 SD-08-92 QHU-40023D4R01 4.000 9 2.375 1.500 0.63 SD-12-82 SD-12-99 QHU-40023D4R02 4.000 7 2.375 1.500 0.63 SD-12-82 SD-12-99 Operating Guidelines on page 96. 50