GENUINE ROLEX 20MM / 16MM DAYTONA B9940 DEPLOYMENT LEATHER STRAP IN USED CONDITION AS PICTURED. 20MM TO FIT ROLEX DAYTONA , SUBMARINER , DATEJUST , DAYDATE PRESIDENT , GMT MASTER , EXPLORER , AND ANY OTHER ROLEX WITH 20MM LUGS. 20MM WIDE ON THE WATCH SIDE AND 16MM ON THE BUCKLE SIDE.