Door Lock Installation Kit, Suitable for 1-3/8" – 1-3/4" (35mm-43mm) Door Thickness, with Carbon Steel Door Lock Hole Saw
£13.991 U-type plastic guide template, 2 hole saws (1″ and 2-1/8″)/(25mm and 54mm), and 1 arbor with drill bit. Saw blade depth is 50mm.