The Drill Bit Stepped High Speed Steel 4 22MM Hex Titanium Step Cone Drill Bit Alignment
The drill bit stepped High Speed Steel 4-22MM Hex Titanium Step Cone Drill Bit Alignment drill Brand Name: Kitbakechen DIY Supplies: Metalworking Type: Twist Drill Bit Material: High Speed Steel Use: Metal Drilling Model Number: GJ0094 length: 75mm Type: Twist Dill Each step height: 5mm Drill long: 52mm Surface treatment: Titanium Workpiece thickness: under 5 mm Item Describe: 1. 100%New Brand and High Quality 2. Type: twist drill 3. Material: High Speed Steel 4. Size: 4,6,8,10,12,14,16,18,20,22MM 5. Drill long: 52mm 6. Each step height: 5mm 7. Surface treatment: Titanium Note: 1.. Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken. 2. Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable, but it is possible. 3. The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit, 4.recommend drilling rate of ...