Description:  6Pcs 1/4 Inch M3-M10 Short Type or Long Type Composite Tap HSS Combination Drill Tap Bit Set Hex Shank Deburr Countersink Bits.     Specifications:  Product Name:Composite Tap Drill Tap Bit Set;  Type:  A: 4341 Six-piece Set Natural Shor Type;  B: 4341 Six-piece Set Titanium Plated Short Type;  C: 4341 Six-piece Set Titanium Plated Long Type;  D: 4341 Six-piece Set Natural Long Type;  Material:High-speed steel (HSS );  Metric:M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5;  Color:Silver, Gold;  Quantity:6 Pcs × HSS Screw Drill Bit ;  Features:  - High Hardness: The overall heat treatment has high hardness and good toughness.  - Spiral Groove Structure: High-speed steel forged and titanium-plated surface treatment, longer service life.  - Standard Hexagon Handle Design: This chamfering device is 1/4 hexagon shank, which is suitable for more bench drills, and the clamping is more tight and does not slip.  - Integrated Composite Tap: Drill and tapping in one step.  - Commonly Used Ordingary Tapping: First drill the bottom hole with a twist drill. Then select the corresponding model tap.     Package Included:  A 6 Pcs × Natural Shor Type Screw Drill Bit;  B 6 Pcs × Titanium Plated Short Type Screw Drill Bit;  C 6 Pcs × Titanium Plated Long Type Screw Drill Bit;  D 6 Pcs × Natural Long Type Screw Drill Bit