Purchase this separately for each 8", or smaller bell, you may already have.
Solid brass wall mount is 6" long (5" from wall to center of U hook). Mounting base measures 2-3/8" x 2" with two countersunk holes for flathead screws (not included; different fasteners are needed depending upon the nature of your receiving end).
U-shaped hook portion measurements for receiving bell: brass stock thickness: 5/16" round, ID across U is 1" at upper open end slowly tapering down to bottom of U.
Call if you desire any further clarification!
Very strong design.