Flush Mounts in a 2-3/8 x 2-3/8 Inch HoleSurface Mounts in a 1-5/8 Inch Diameter Hole with Polymer Spacer IncludedFor Door Thickness 1/8 to 3/4 Inch Black or White Polymer Chrome Plated Zinc Alloy Stainless Steel Stem and Lock Nut Large Handle Allows Two Finger Grip