Curved bottom, flat top for carved/archtop guitars. Position Bridge. Bridge Height (Back Tapering To Front) 10.8 mm - 9 mm (0.43" - 0.35"). Colour Ivory. Pickup Mounting Hole Spacing 78 mm (3.07"). Ring Mounting Hole Spacing (Length x Width) 82.5 mm x 37 mm (3.25" x 1.46").