"CONSISTS OF 2 SLEEVE HALVES FOR 1.000 INCH OD TUBE,4.000 INCH LONG; 2 EACH SLEEVE CLAMPS PART NO.8772,FSCM 58632 AND 2 MACHINE SCREWS,6MM DIA BY 25MM LONG WITH DEFORMED HEX LOCKING NUTS.USED ON LOW IMPACT RESISTANCE TOWERS FOR MALSR LIGHTING SYSTEMS;ASSY INSTRUCTION, SAFETY APPROACH MAST, JAQUITH INDUSTRIES INC., PG 25, ITEM 33"