HOLLOW WALL TYPE; STEEL MATERIAL; ZINC PLATED FINISH; 2-3/4 INCH ANCHOR LENGTH; 20 TPI; 1/4 INCH SCREW SIZE; 1/2 INCH DRILL SIZE; PHILLIPS, SLOTTED HEAD TYPE; 1/4 INCH ANCHOR SIZE; SLEEVE LENGTH 2-3/4 INCH; WALL THICKNESS 5/8 TO 7/8 INCH; HEX LENGTH LONG