Universal adapter for Faber-Castell compass Quality and functionality combined with exceptional design. Aside from design trends, Faber-Castell offers resistant technology. Robust clamping wheels, firm central screws, easy-to-adjust arms, non-slip needles and clamps for exact lines are essential features of Faber-Castell compasses. For all types of tools. Pivot Ø 3.0 mm, 3.5 mm and 4.0 mm. Adjustment using the six-point system. Adjustable to point 0. Brand: Faber-Castell.