The retro styling of the Edinburgh is given a contemporary upgrade with the simple addition of sensuous curves, a gentle nod to the mysterious seaglass that inspires its flowing form. All handles are supplied with M4 fixing bolts.  Knob KB-B-4193-47Length: 47mm, Width: 25mm, Projection: 28mm Knob KB-B-4193-54Length: 54mm, Width: 28mm, Projection: 32mm Knob KB-B-4193-60Length: 60mm, Width: 32mm, Projection: 36mm