The Spazzer Bar Guard retainer clip is used to secure the Spazzer bar when used in load-bearing applications. ClarkDietrich TradeReady Spazzer 5400 spacer bar is a pre-notched, 16-gauge, galvanized steel spacer and bridging bar, engineered to facilitate the rapid, efficient erection of exterior curtain wall framing, loadbearing walls and high interior partitions constructed of structural studs.