Vintage Forge White Flat Humbucker Pickup Mounting Rings (2-Pack). We have found these rings to be a great replacement for many makes and models of guitars requiring a 89mm wide ring but it is very important that you measure your existing rings and mounting hole spacing first to be sure. Features:(2) High quality plastic rings in Cream finish. Flat bottoms w/non-tapered sides. Easy to install – screws sold separately. Vintage Forge Factory Sealed Packaging Part HR3300F-WHT Dimensions: Outer Dimensions: 3 1/2” (89mm) x 1 25/32” (45mm) Interior Dimensions: 2 3/4 in. (70mm) x 1 9/16” (39.5mm) Body mounting holes spacing center to center: 3 3/16 in. (81mm) x 1 29/64” (37mm) Pickup mounting holes spacing center to center: 3 5/64” (78mm)Pickup Ring Height: 1/8” (3mm)