• The DF-1610TC Titanium Carbo Nitride (TiCN) coating on this bit will lower friction and keep the edge sharp longer than regular drill bits
• The twist is 10mm and the shank is 8.0mm and has a flat spot on it to be tightened into our DF-15 Series Spot Weld Drills
• Our drill bits a specifically designed for the abuse of spot weld drilling
• Flat ground for strength, centering nib to prevent walking
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