ANCHOR LENGTH 1-1/2 INCH; ANCHOR SIZE 5/16 INCH; DRILL SIZE 5/8 INCH; LOAD RATING 1670 LB FOR 2000 PSI, 2540 LB FOR 4000 PSI, 2980 LB FOR 6000 PSI CONCRETE; MATERIAL ZAMAC 7 ALLOY; THREAD LENGTH 5/16 INCH; TPI 18; TYPE SINGLE EXPANSION; POWERS. BRAND