Milescraft 1343 Shelf Jig – Create ¼ in. and 5mm Shelf Pin Holes for Cabinets. Standard 32mm Spacing. Shelf Pin Jig includes Two Drill Bits - Amazon.com
EZ Align Premium Shelf Pin Drilling Jig With 1/4" And 5mm Self Centering Drill Bits, Dual Sided Shelf Pin Jig for Easy Alignment On Both Sides Of The Shelf - Amazon.com