3 Pcs Cone Drill Bits for Metal Wood Plastic High Speed Steel Titanium Coated Metric Step Drill Bit Set (4-12mm, 4-20mm, 4-32mm)

【Titanium Coated & HSS Material】: The stepper bit is made of high speed steel material with titanium electroplating process to reduce friction and heat, ensure good performance and durability in hole drilling. 【Double Groove Design】: Double groove design makes cutting smoother with this cone drill bit. Clean debris faster, making…