L1 L4 L DR-2D-N (continued) D D= 14-60 mm Indexable Square Insert Drills with Th dh6 D3 Coolant Holes, Drilling Depth 2xD D= 12-13.5 mm Spare Parts Designation DR(120-135)....-04-2D-N SR 34-533 T-6/5 DR(140-175)....-05-2D-N SR 34-533/L T-6/5 DR(180-205)....-06-2D-N SR 34-508/L T-7/51 DR(210-240)....-07-2D-N SR 14-560 T-8/51 DR(025-034)....-09-2D-N SR 34-506 BLD T09/M7-SW4 SW4-SD DR(035-044)....-12-2D-N SR 14-544/S BLD T15/S7 SW6-SD INDEXABLE DRILLS DR(044-060)....-16-2D-N SR 76-961 BLD T15/M7 SW6-T 521