Product details of MARCO POLO ENTRANCE DOOR LOCK WITH KEY MATTE BLACK HEAVY DUTY BRAND : MARCO POLO FEATURES : MEET 200,000 CYCLES ANSI A156.2 WROUGHT STEEL TUBULAR LOCK HOUSING WITH CHROMATE FINISH FOR BETTER CORRSOSION RESISTENCE REVERSIBLE LEFT AND RIGHT HANDLING BACKSET : ADJUSTABLE 2 3/8" (60MM) AND 2 3/4" (70MM) FIT MOST EXSISTING DOOR HOLE SIZE