Description: High quality industrial countersink drill set is perfect for woodworking drilling and chamfering. High speed steel material is of strong hardness and long durability. Sharp cutting edge is easy to remove wood sawdust and ensures a smooth chamfer. The countersink set includes round shank and hex shank to fit for bench drills with different specifications. Features: This countersink is made of high speed steel, ensuring strong hardness and long durability. The set contains 5 pieces of countersink drill in different diameter and shank shape for various demands. Five flutes design remove wood sawdust more rapidly and smoothly. Great for drilling, chamfering, deburring and countersinking. Suitable for drilling holes on board of low hardness such as thin aluminium sheet, wood board, PVC board and insulating plate, but can not used for glass, iron plate and steel plate. Specifications: Condition: 100% Brand New Material: High Speed Steel Color: Shown as picture Countersink Flute: 5 Chamfer Angle: 82 Chamfer Diameter: Round Shank 1/2 (12.7mm) Round Shank 5/8 (15.9mm) Hex Black Shank 3/8 (9.5mm) Hex Black Shank 1/2 (12.7mm) Hex Shank 1/2 (12.7mm) Weight: 112g Package Included: 1 x 5pcs/set Countersink Drill Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.