The Two Step High Speed drill bit is used to drill the proper size hole for plunger bolts in screen frame. The Two Step High Speed drill bit has a 7/32" shank steps down to an 1/8". This handy drill bit allows you to drill both sizes of holes needed for the installation of plunger bolts in a single operation.
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This was just what I needed for attaching the screens to the windows, Drill bit worked great. Made a jig so I could drill straight. Had the screens done in no time.