【Exterior Door Handle】Made of crystal and zinc alloy, the classic square door handle design fits most decorative styles. 【Size】Fit most standard-sized doors with 1-3/8" to 1-3/4"(35mm-45mm) thickness, adjustable latch to fit any 2-3/8"(60mm) or 2-3/4"(70mm) backset.The hole drill of door handles black can be adjusted from 7-7/8" to 8-2/3"（200mm-220mm). 【Reversible】The crystal door knobs can be installed on right and left handed doors. 【Easy to install】This entry door lock set includes the accessories what you need and installation instructions,you can do it by yourself. 【Satisfaction Service】If you are not satisfied with the door handlesets, please contact us in time to solve it. BonKuDoo Black Front Door Handle and Single Cylinder Deadbolt Set, Front Door Lock Set with Glass Door Knobs