Product Description BlastKing KXL-HB Flying bracket for KXL Series Line Array Scalable up to (8) KXL10A or (6) KXL10A plus (1) KXL15AS or KXL18AS This strong galvanized steel flight frame has been designed for flying system and also for ground stacking system. Product Description BlastKing KXL-HB Flying bracket for KXL Series Line Array Scalable up to (8) KXL10A or (6) KXL10A plus (1) KXL15AS or KXL18AS This strong galvanized steel flight frame has been designed for flying system and also for ground stacking system.