Brisbois Tool 8.5mm Pilot 11mm Maj Dia. Carbide Step Countersink Tang Drill Bit

Shank Style & Diameter: 11mm tang
Cut Diameter: 8.5mm x 11mm
Overall Length: 6-3/4"
Number of Flutes: 2
Length of Flutes: 30mm pilot 135mm total
Drill Point Angle: 118°
Tool Material: Carbide