These surrounds are flat backed to fit all flat fronted guitars. The two surrounds are different thicknesses and slope from back to front: 7mm to 5mm for Neck position 5mm to 3mm for bridge position 4 fixing holes are 83mm and 37mm apart. 2 pickup holes are 78mm apart. Inside hole dimensions are 70x38mm Outside dimensions are 92mmx46mm Also included are the 8 chrome plated mounting screws.
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