Thunderbird bass pickup mounting rings Available in Chrome, Gold, and Nickel plated nickel-silver These are not made of plastic Dimensions are 3 15/16" (100mm) x 2 1/8" (54mm) x 3/64" (1mm) thick Outer mounting hole spacing measured center to center is 3 9/16"(90.5mm), Short side 1 3/4"(44mm) ***Please check dimensions before ordering*** MOUNTING SCREWS ARE NOT INCLUDED - uses #3 x 3/8" oval head screws (Gibson pickguard/backplate screws) Metal pickup covers are purchased separately Qty 1 pickup mounting ring