Allows the rim to be easily removed from the backstop. For security from vandalism or liability, the rim can be removed from the front. The Universal hole pattern will bolt up to almost all institutional backboards. This allows rim change out to non standard hole pattern rims with 7" mounting plate. Works with all non flex rims with 7" mounting plate. Electrostatic powder paint for durability. All hardware is plated for outdoor use and included. Unit is heavy gauge steel with welded construction. Ships UPS.