The US PRO 3pc 12mm Countersink Set is designed for precision sinking of 70° and 90° holes into soft metals and wood, ideal for preparing countersunk screws and fixings. This versatile set includes countersinks with different chamfer angles and shank types to suit a variety of tasks. Key Features: Material: Hardened for durability Application: Suitable for soft metals and wood Specifications: 1 x 12mm Countersink: 90° chamfer with a 6.0mm cylindrical shank (shank length 25mm, overall length 45mm) 1 x 12mm Countersink: 70° chamfer with a 6.0mm cylindrical shank (shank length 25mm, overall length 45mm) 1 x 12mm Countersink: 90° chamfer, 5-flute with 1/4" hex shank (shank length 22mm, overall length 36mm)