These security hinge bolts provide added security on outward opening external doors with exposed hinge knuckles and deter intruder access through the door. Hinge bolts will help to reinforce the hinge side of the door, keeping the door in the frame when the door or hinges are forcibly attacked. Normally only used on external outward opening wooden doors. They are supplied in a pack of two bolts and two receivers which is suitable for one door leaf, and come complete with fixing screws for wooden doors. The bolt which fits in the door is 19mm diameter and 44mm deep while the receiver which fits in the frame is 25mm wide x 70mm high. The hinge bolts should be fitted 75mm below the top hinge and 75mm above the bottom hinge. Only available in WE white finish. Previously branded Chubb, now branded Yale.