Aluminum tarp spool mounting bracket for standard 4- and 5-spring electric aluminum tarping systems. Measures 10 1/2" long and 9" wide, with a 2" center hole and a 1 9/16" x 3 1/2" rectangular cut-out at the bottom. 4 7/8" angle on one side, 3 1/4" angle on the other side. Bolt pattern as shown in picture.