"HILLMAN" POLY-TOGGLE *1/2"-5/8", medium *Drill size: 5/16" *Min. wall thickness: 1/2" *Use in wallboard, solid masonryor hollow doors *Use with sheet metal screw *Screw activated *Exact fit assures solid holding power *Made of polypropylene *Box/100 *Discovery CON, NBR, SUP, HWU