- The DF-1680TC 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.
- These German made spot weld bits are available in 2 sizes: 8.0 (DF-1680TC) and 10.0 mm (DF-1610TC). 8 mm or .314 inches.