This is a Von Duprin Dogging screw used on von Duprin model 88 panic hardware . it is 5/8 inches long , and is operated by a hex key . The hex key is not included. This is a used takeout item it has been checked for wear and is in excellent condition DOG SCREW FOR 88 & 44 DEVICES 090083 - VON88DOG SCREW 090004 stk#(1122)A13 B11
