These humbucker mounting rings have a slightly curved bottom for guitars with a carved top like a Les Paul. 

Please note that if the curve is not quite deep enough you can adjust by sanding as we do not recommend curving by tightening the screws as this can cause them to crack.

Specification:

• 45 x 90mm
• Neck ~6mm sloping to 4mm high
• Bridge ~12mm sloping to 10mm high
• 4 Long and 4 Short Mounting Screws

Humbucker Rings Data Sheet