Internal or externally operated locks. Ideal for integral garages. Can be fitted to garage door either vertical or horizontal. Both locks are keyed alike with a Four sided key offering million of key differs. Three keys provided. Bolts shoot 70mm into frame or ground sleeve. Easy to fit - just drill three small holes. Complete with coach bolts, nuts and escutcheons. This rugged pair of security garage door bolts can be used on all types of Up & Over or sectional garage doors of metal or wood construction. The bolts will suit doors of up to 38mm thick. Screws are supplied for the escutcheons but not rivets.