The Alpen 18.0mm x 460mm Wood Auger Drill offers precision and durability for drilling in square timbers and wood jambs. It features highly accurate centring and sharp cutting edges. Brand: Alpen Diameter: 18.0mm Working Length: 380mm Overall Length: 460mm Application: For drilling in square timbers and wood jambs Highly accurate centring for precise results Sharp cutting edges ensure clean and efficient drilling