Famag Adjustable Centre Spade Bit Size 1 15-45 mm - (Ref: 1540.001) Key Features: Version with center point, a fixed main cutting edge and adjustable knife with spur cutter. Adjustable center drill with sturdy cylindrical shaft 13 x 50 mm For drilling in softwood, universal in all diameters and intermediate dimensions Only suitable for stationary use. Compromise tool, for professional use it is better to use FAMAG cylinder head drills such as Bormax® 2.0 UPM: 300 - 1500 min-1. e.g. at Ø 50 mm 600 min-1 in softwood stationary Specification: Outer diameter: 15-45mm Overall length: 150mm