Profile: Central Lock & Key offers lock hardwares. Our products include locks, commercial, residential, keyless & electronic locks, knobsets, lock parts & accessories, commercial safes and undercounter safes. Medeco® deadbolt residential single cyclinder features a solid brass, free turning collar & 1/4 inch diameter mounting bolts resist wrenching, prying and hammering attacks. Its solid brass design is secured with high-tensile steel mounting bolts for maximum resistance against hammer and prying attacks.