Drill/Countersink Bell Included Angle 60 Degrees Size #19 Point Dia 5/16 In. Body Dia 7/8 In. Overall Length 3-5/8 In. Cutting Direction Left Hand Material High Speed Steel Finish Uncoated Number of Pieces 1 For Producing Protected Center Holes In Components or Workpieces Which Require Machining Between Centers As The Additional 120 Degrees Included Chamfer Eliminates The Risk of Deforming The Countersink Seat