Fangrui Product Details Fangrui Product Details Door Hole Drilling Kit For Wooden Doors: Designed To Work Well With Wood Doors In The Most Common Lock Sizes For Everyday Use; Adjustable Plastic Guide Template Fits 1-3/8-inch And 1-3/4 Inch Thick Doors And Fits 2-3/8-inch And 2-3/4 Inch Backsets Professional Quality: The Hole Saw And Arbor Are Made Of Durable Carbon Steel, Coupled With A Reinforced Plastic Guide Template, Which Allows This Door Lock Installation Kit To Ensure Long-lasting Performance Even With Frequent Use Easy Lockset Installation: This Adjustable Guide Template Allows For Easy And Accurate Drilling, And The Snap-lock Arm Can Be Applied To Select Door Widths And Backsets; No Worries Installation In A Few Simple Steps Notice: This Door Lock Installation Kit Is Compatible With Wooden Doors Only; Do Not Drill Through The Door Only On One Side, You Should Drill Bore Hole Halfway On Each Side Of The Door. Please Note: The Physical Slightly Color Difference Or Difference, Does Not Affect The Use, Please Do Not Mind, Thank You! Colour:orang