Cream plastic humbucker mounting rings
In this listing you can buy the SET (Bridge & Neck rings) or SINGLE (Choice or Bridge OR Neck ring)
The bridge position mounting ring has a curved base type with slanted sides.
The neck position ring has a flat base but is shallow enough to flex into a curved shape. It also has slanted sides.
Measurements
External measurements (both Bridge and Neck rings)
92.5mm x 45.5mm
Distance between screwhole centres
82mm x 37.5mm
Bridge ring tapers from 10mm on thicker edge to 7.5mm
Neck ring tapers from 4.5mm on thicker edge to 3.5mm