For lock installations on storefront doors. Install new MS locks or replace stripped out MS lock mounting screws with GKL Bridgesᆴ. All it takes is a twist of the special key to snap the bridgeᆴ into an aluminum framed, narrow stile, storefront door. Done in about 10 seconds and ready to accept an MS lock deadbolt or dead latch. The kit includes a spanner key and 4 snap-in Bridgesᆴ (2 optional screws are included for each Bridgeᆴ for additional stability and holding power if needed)