Dewalt dt no6810 pilot drill bits packs of 3 dewalt dt7609 qz this pack of pilot drill bits from dewalt are suitable on hard and soft wood composite board and mdf can be used with the 4 cutter countersinks the split point tip starts drilling on contact and the flat part on the shank prevents the drill bit slipping in the countersink dewalt dt7609 qz no 8 pilot drill bits 3