Baldwin Reserve DCCOLXTRATAR049STHK Double Cylinder Columbus Handleset with Traditional Knob and Traditional Arch Rose with Smartkey For Thick Door with 6AL Latch and Dual Strike Matte Brass and Black Finish. Specifications: Category:Residential Locksets - Sub Category:Handlesets - Finish:Matte Brass and Black - Function:Double Cylinder - Series:Reserve - Design:Columbus Handleset with Traditional Knob and Traditional Arch Rose - Strike:Dual Strike - Backset:6 Way Adjustable Latch, 2-3/8" or 2-3/4" Backset - Additional Information: Columbus Handleset With Traditional Knob ; Adjustable 2-3/8" Or 2-3/4" Backset ; Adjustable Ctc ; Solid Forged Brass Construction ; Limited Lifetime Mechanical Warranty and Limited 25 Year Finish Warranty ;